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A review of Ordovician agnostid genera (Trilobita)

Published online by Cambridge University Press:  03 November 2011

Arne Thorshøj Nielsen
Arne Thorshøj Nielsen
Affiliation:
Geological Museum, University of Copenhagen, Øster Voldgade 5–7, DK-1350 Kbh. K, Denmark.
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Abstract

The definition and scope of Ordovician genera of agnostid trilobites are discussed, and the generic affiliation of Ordovician species and well-illustrated material referred to in open nomenclature is assessed. Some 198 Ordovician species plus 25 species of uncertain latest Cambrian/earliest Ordovician age are enumerated, representing 24 genera and subgenera, of which Geragnostus (Novoagnostus) n.subg. and Lotagnostus (Semagnostus) n.subg. are new. Geragnostella is ranked as a subgenus of Geragnostus. The species of Arthrorhachis are tentatively divided among a tardus species group and an elspethi species group. Species of Dividuagnostus are divided among a sensu stricto group and an early species group. Pseudorhaptagnostus Lermontova, 1951 is restored as senior synonym of Neoagnostus Kobayashi, 1955. It is concluded that Ordovician agnostids were largely adapted to temperate and colder water habitats.

Keywords

Ordovicianagnostidstrilobitesdistributionpalaeoecology
Type
Research Article
Information
Earth and Environmental Science Transactions of The Royal Society of Edinburgh , Volume 87 , Issue 4 , 1996 , pp. 463 - 501
Copyright
Copyright © Royal Society of Edinburgh 1996

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References

Abdullaev, R. N. & Khaletskaya, O. N. 1970. [Lower Palaeozoic of the Chatkalskogo Ridge: Ordovician trilobites and graptolites of the Pskemskogo Ridge.] Tashkent: Akademija Nauk Uzbekskoj SSR, Institut Geologii i Geofiziki, FAN. [In Russian.]Google Scholar
Abdullaev, R. N. 1972. Trilobity Verhnego Ordovika Bukantau [Trilobites of the Upper Ordovician of Bukantan]. In Masymov, A. S. & Abdullaev, R. N.. (eds) [New data of the fauna of the Palaeozoic and Mesozoic of Uzbekistan], 103–26 pls. XL. XLV-XLIX. Tashkent: Akademija Nauk Uzbekskoj SSR. Institut Geologii i Geofiziki, FAN. [In Russian.]Google Scholar
Ahlberg, P. 1988a. Ocular structures in an Ordovician agnostid trilobite. LETHAIA 21, 115–20.CrossRefGoogle Scholar
Ahlberg, P. 1988b. Agnostid trilobites from the Ordovician of Jämtland, Sweden. GEOL FÖREN STOCKHOLM FÖRH 110, 267–78.CrossRefGoogle Scholar
Ahlberg, P. 1988c. A revision of the Ordovician agnostid trilobite Leiagnostus Jaekel 1909. GEOL FÖREN STOCKHOLM FÖRH 110, 363–70.CrossRefGoogle Scholar
Ahlberg, P. 1989a. Agnostid trilobites from the Upper Ordovician of Sweden and Bornholm, Denmark. BULL GEOL SOC DENMARK 37, 213–26.CrossRefGoogle Scholar
Ahlberg, P. 1989b. Agnostid trilobites from the Lower Ordovician Komstad Limestone Formation of Killeröd, Scania. Sweden. PALAEONTOLOGY 32, 553–70.Google Scholar
Ahlberg, P. 1989c. The type species of the Ordovician agnostid trilobite Geragnostus Howell, 1935. PALÄONTOL ZEITSCHR 63, 309–17.CrossRefGoogle Scholar
Ahlberg, P. 1990. Agnostid trilobites from the Ordovician of the Siljan district. GEOL FÖREN STOCKHOLM FÖRH 112, 145–56.CrossRefGoogle Scholar
Ahlberg, P. 1992. Agnostid trilobites from the Lower Ordovician of southern Sweden. TRANS R SOC EDINBURGH: EARTH SCI 83, 539–70.CrossRefGoogle Scholar
Angelin, N. P. 1851. Palæontologia Scandinavica, pt. I. Stockholm.Google Scholar
Alonso, R. N., Malanca, S. & Sureda, R. J. 1982. Consideraciones sobre el Ordovicico en la Sierra de Aguilar, Jujuy. Argentina. Revista del Instituto de Ciencias Geológicas, Universidad Nacional de Jujuy 5, 15–37.Google Scholar
Ancygin, N. Ya. 1978. [Early Ordovician trilobites from sections in the Mayachnoy Mtns of the Bredinskon region.] TRUDY INST GEOL GEOKHIM 135, 30–44. [In Russian.]Google Scholar
Apollonov, M. K. & Chugaeva, M. N. 1984. Trilobites. In Apollonov, M. K, Chugaeva, M. N. & Dubinina, S. V. (eds) Trilobites and conodonts from the Batyrbay section (Uppermost Cambrian–Lower Ordovician) in Malyi Karatau Range (Atlas of the palaeontological plates), pls 1–27, no text. Alma Ata: ‘Nauka’ Kazakh SSR Publishing House.Google Scholar
Balashova, E. A. 1961. Nekotorye Tremadokskie trilobity Aktjybinskoj Oblasti. [Some Tremadocian trilobites from the Aktyubinsk Province.] TRUDY GEOL INST AKAD NAUK SSSR 18, 102–45. Moskva. [In Russian.]Google Scholar
Balashova, E. A. 1966. Trilobity iz Ordovikskich i Silurijskich otloženij Pamira. [Trilobites from the Ordovician and Silurian Beds of Pamir.] TRUDY UPRAVLENIE GEOL SOV MINIST TADZHIKSKOJ SSR, MOSCOW. PALEONTOLOGIE I STRATIGRAFIJA 2, 191–262. [In Russian.]Google Scholar
Barrande, J. 1846. Notice preliminaire sur le Systeme silurien et les Trilobites de Boheme. Leipsic.Google Scholar
Barrande, J. 1868. Silurische Fauna aus der Umgebung von Hof in Bayern. NEUES JAHRBUCH FÜR MINERALOGIE. 641–96. pls 6–7.Google Scholar
Barrande, J. 1872. Systeme Silurien du centre de la Boheme. Supplement to vol. I. Prague and Paris.Google Scholar
Belt, T. 1867. On some new trilobites from the Upper Cambrian Rocks of North Wales. GEOL MAG 4, 294–5. pl. 12.CrossRefGoogle Scholar
Belt, T. 1868. On the Lingula Flags or Festiniog Group of the Dolgelly District. GEOL MAG 5, 5–11, pl. 2.CrossRefGoogle Scholar
Benedetto, J. L. & Malanca, S. 1975. Los Trilobites Ordovicicos de los Colorados (Departamento de Tumbaya, Provincia de Jujuy). In Actus Congreso Argentino de Paleontologia y Biostratigrafia. Tucumán, Argentina 1, 149–73. Tucuman: Asociacion Paleontologica Argentina.Google Scholar
Benedetto, J. L., Canas, F. & Astini, R. 1986. Brachiopodos y trilobites de la zona de Transicion entre Las Formaciones San Juan y Gualcamayo en el area de Guandacol (La Rioja, Argentina). IV Congreso Argentino de Paleontologia y Biostratigrafia. 103–11. Tucuman: Asociacion Paleontologica Argentina.Google Scholar
Berard, P. 1986. Trilobites de l'Ordovicien Inferieur des Monts de Cabrieres (Montagne Noire—France). Memoires du Centre d'Etudes et de Recherches Geologiques et Hydrologiques. Université des Sciences et Techniques du Languedoc (Montpellier II) 24, Montpellier: CERGA.Google Scholar
Bergeron, J. 1889. Etude geologique du Massif Ancien situe au sud du plateau central. ANN SCI GEOL, PARIS 22.Google Scholar
Billings, E. 1860. On some new species of fossils from the limestone near Point Levi, opposite Quebec. CAN NATURALIST 5, 301–24.Google Scholar
Billings, E. 1865. Palaeozoic fossils, 169–394. Montreal: Geological Survey of Canada.CrossRefGoogle Scholar
Borukaev, R. A. & Ivshin, N. K. 1962. [Regional Geology. Geology of the cingizskoj geoanticlinal zone (Central Kazakhstan).] Alma-Ata: AKAD NAUK Kazakhstan SSR. TRUDY INST GEOL 5. [In Russian.]Google Scholar
Brenchley, P. J., Harper, J. C., Romano, M. & Skevington, D. 1967. New Ordovician faunas from Grangegeeth. Co. Meath. PROC R IRISH ACAD 65, 297–304.Google Scholar
Brongniart, A. 1822. Savoir: les Trilobites. In Brongniart, A. & Desmarest, A. G. (eds) Histoire naturelle des crustaees fossiles, sour les rapports zoologiques et geologiques. Paris: F. G. Levrault.CrossRefGoogle Scholar
Bruton, D. L. & Owen, A. W. 1979. Late Caradoc—early Ashgill trilobite distribution in the central Oslo Region, Norway. NORSK GEOL TIDSSKRIFT 59, 213–22.Google Scholar
Bruton, D. L., Koch, L. & Repetski, J. E. 1988. The Naersnes section, Oslo Region, Norway: trilobite, graptolite and conodont fossils reviewed. GEOL MAG 125, 451–5.CrossRefGoogle Scholar
Bulman, O. M. B. & Rushton, A. W. A. 1973. Tremadoc faunas from boreholes in central England. BULL GEOL SURV GB 43.Google Scholar
Burskiy, A. Z. 1970. Ranneordovickie trilobity Severa Paj-Choja [Early Ordovician Trilobites of central Paj-Choj]. In Bondarev, V. I. (ed.) [Reference papers on the Ordovician in Paj-Choya. Vangach Islands and S. Novaya Zemlya]. INST GEOL ARKTIKI. 96–138. pls I-XVI Leningrad. [In Russian.]Google Scholar
Butts, C. 1926. The Palaeozoic rocks. In Adams, G. I., Butts, C., Stephenson, L. W. & Cooke, W. (eds) Geology of Alabama. GEOL SURV ALABAMA, SPEC REP 14, 40–230. pls 3-76.Google Scholar
Callaway, C. 1877. On a new area of Upper Cambrian rocks in South Shropshire, with description of a new fauna. Q J GEOL SOC LONDON 33, 652–72, pl. 24.CrossRefGoogle Scholar
Capeia, J.-C., Courtessole, R. & Pillet, J. 1975. Biostratigraphie de l'Ordovician Inferieur de la Montagne Noire (France Meridionale), Tremadocien lnferieur. BULL SOC HIST NAT TOULOUSE 111, 337–80.Google Scholar
Wentang, Chang & Chiasung, Fan 1960. [Class Trilobita of the Ordovician and the Silurian Periods of the Chi-Lien Mountains]. In Tsanhsun, Yin (ed.) [Geological gazetter of the Chi-Lien Mountains] 4:1, 83–147. Beijing: Science Press. [In Chinese.]Google Scholar
Chernysheva, N. E. (ed.) 1960. Osnovi paleontologii. Gosudarstvennoe Nauchno-Tekhnicheskoe Izdatelstvo. Moskva.Google Scholar
Yi-uan, Chien 1961. Cambrian trilobites from Sandu and Duyun. Southern Kweichow. ACTA PALAEONTOL SINICA 9:2, 91–129.Google Scholar
Clark, T. H. 1923. A group of new species of Agnostus from Lévis, Quebec. CAN FIELD NATURALIST 37:7, 121–5.CrossRefGoogle Scholar
Cooper, G. A. & Kindle, C. H. 1936. New brachiopods and trilobites from the Upper Ordovician of Percé, Quebec. J PALEONTOL 10, 348–72, pls 51–3.Google Scholar
Courtessole, R. & Pillet, J. 1978. La Faune des couches a Shumardia du Tremadocien Superieur de la Montagne Noire. BULL SOC HIST NAT TOULOUSE 114, 176–86.Google Scholar
Dalman, J. W. 1827. Om Palæaderna eller de så kallade trilobiterna. KUNGLIGA VETENSKAPS-ACADEMIENS HANDLINGAR 113–52 & 226–94. (Also published in German in München.)Google Scholar
Dean, W. T. 1966. The Lower Ordovician stratigraphy and trilobites of the Landeyran valley and the neighbouring district of the Montagne Noire, South-Western France. BULL BR MUS (NAT HIST), GEOL 12, 245–353.Google Scholar
Dean, W. T. 1970. Lower Ordovician trilobites from the vicinity of South Catcher Pond, northeastern Newfoundland. GEOL SURV CAN PAP 70–44, 1–11.Google Scholar
Dean, W. T. 1971. The Lower Palaeozoic stratigraphy and faunas of the Taurus Mountains near Beyşehir, Turkey, II. The trilobites of the Seydişehir Formation (Ordovician). BULL BR MUS (NAT HIST), GEOL 20, 1–24.Google Scholar
Dean, W. T. 1973a. Lower Ordovician Trilobites from the Summerford Group at Virgin Arm, New World Island, Northeastern Newfoundland. GEOL SURV CAN BULL 240.Google Scholar
Dean, W. T. 1973b. The Lower Palaeozoic Stratigraphy and faunas of the Taurus Mountains near Beyşehir, Turkey, III. The trilobites of the Sobova Formation (Lower Ordovician). BULL BR MUS (NAT HIST), GEOL 24, 279–348.Google Scholar
Dean, W. T. 1982. The Cambrian–Ordovician transition in southeastern Turkey and adjacent areas. In Bassett, M. G. & Dean, W. T. (eds) The Cambrian–Ordovician boundary: Sections, fossil distributions, and correlations, 87–94. National Museum of Wales. Cardiff, Wales, Geological series 3.Google Scholar
Eichwald, E. 1857. Klasse der Krustazeen. In Beiträge zur geographiischen Verbreitung der fossilen Thiere Russlands. BULL SOC IMPÉRIALE NATURALISTES MOSCOU 30, 305–38.Google Scholar
Eichwald, E. 1860. Lethaea Rossica ou paleontologie de la Russie, I. Stuttgart.Google Scholar
Ergaliev, G. Kh. 1980. Trilobity Srednego i Verkhnego Kembriya Malogo Karatau [Trilobites of the Middle and Upper Cambrian of Malyi Karatau]. Alma-Ata: NAUKA. [In Russian.]Google Scholar
Ergaliev, G. K. 1983. [Some trilobites from the Upper Cambrian and Lower Ordovician of the Bolshogo Karatau and Ulutau.] In Apollonov, M. K., Bandaletov, S. M. & Ivshin, N. K. (eds) Stratigrafiya i Paleontologiya Nizhnego Paleozoya Kazakhstana [The Lower Paleozoic stratigraphy and palaeontology of Kazakhstan]. 35–90. pls 1-10. Alma-Ata: NAUKA Kazakh SSR Publishing House. [In Russian.]Google Scholar
Fortey, R. A. 1975. Early Ordovician trilobite communities. In Martinsson, A. (ed.) Evolution and morphology of the Trilobitae, Trilobitoidea and Merostomata. FOSSILS & STRATA 4, 331–52.Google Scholar
Fortey, R. A. 1980a. The Ordovician trilobites of Spitsbergen. III. Remaining trilobites of the Valhallfonna Formation. NORSK POLARINST SKRIFTER 171, (Oslo.)Google Scholar
Fortey, R. A. 1980b. Generic longevity in Lower Ordovician trilobites: relation to environment. PALEOBIOLOGY 6, 24–31.CrossRefGoogle Scholar
Fortey, R. A. & Owens, R. M. 1987. The Arenig Series in South Wales: Stratigraphy and Palaeontology. BULL BR MUS (NAT HIST), GEOL 41, 69–307.Google Scholar
Fortey, R. A. & Owens, R. M. 1991. A trilobite fauna from the highest Shineton Shales in Shropshire, and the correlation of the latest Tremadoc. GEOL MAG 128, 437–64.CrossRefGoogle Scholar
Fortey, R. A., Landing, E. & Skevington, D. 1982. Cambrian-Ordovician boundary sections in the Cow Head Group, western Newfoundland. In Bassett, M. G. & Dean, W. T. (eds) The Cambrian-Ordovician boundary: Sections, fossil distributions, and correlations, 95–129. National Museum of Wales, Cardiff, Wales, Geological series 3.Google Scholar
Fortey, R. A., Owens, R. M. & Rushton, A. W. A. 1989. The palaeogeographic position of the Lake District in the Early Ordovician. GEOL MAG 126, 9–17.CrossRefGoogle Scholar
Fortey, R. A.. Harper, D. A. T., Ingham, J. K., Owen, A. W. & Rushton, A. W. A. 1995. A revision of Ordovician series and stages from the historical type area. GEOL MAG 132, 15–30.CrossRefGoogle Scholar
Gil Cid, D. 1972. Sobre algunos asaphidae (Trilobites) del Ordovicico de los Montes de Toledo (Espana). ESTUDIOS GEOLOGICOS (Madrid) 28, 89–99.Google Scholar
Grant, R. E. 1965. Faunas and stratigraphy of the Snowy Range Formation (Upper Cambrian) in southwestern Montana and northwestern Wyoming. GEOL SOC AM MEM 96.Google Scholar
Hall, J. 1863. Preliminary notice of the fauna of the Potsdam Sandstone. Albany 16th Annual Report of the Regents of the University of the State of New York on the condition of the State Cabinet of Natural History. 119–22.Google Scholar
Hall, J. & Whitfield, R. P. 1877. Paleontology (Part II. Fossils of the Potsdam Group). In King, C. (ed.) Report of the United States geological exploration of the Fortieth Parallel, 4. US ARMY ENGINEER DEPT PROF PAPS 18, 198–302.Google Scholar
Han, Nai-ren 1983. Lower Ordovician trilobites from the Yinchufu Formation of Jiangshan, W. Zhejiang. ACTA PALAEONTOL SINICA 22, 571–6. [In Chinese with English abstract.]Google Scholar
Han, Nai-ren 1989. [The ocular structure in agnostid trilobites.] J GUILIN COLLEGE GEOL 9, 411–14. [In Chinese.]Google Scholar
Harland, W. B., Armstrong, R. L., Cox, A. V., Craig, L. E., Smith, A. G. & Smith, D. G. 1989. A geologic time scale. Cambridge University Press.Google Scholar
Harper, D. A. T., Graham, J. R., Owen, A. W. & Donovan, S. K. 1988. An Ordovician Fauna from Lough Shee, Partry Mountains, Co. Mayo, Ireland. GEOL J 23, 293–310.CrossRefGoogle Scholar
Harrington, H. J. 1937. On some Ordovician fossils from northern Argentina. GEOL MAG 74, 97–124, pls 5–7.CrossRefGoogle Scholar
Harrington, H. J. 1938. Sobre las Faunas del Ordoviciano Inferior del Norte Argentino. REV MUS LA PLATA (NUEVA SERIE). SEC PALEONTOL, 109–289. (Argentina.)Google Scholar
Harrington, H. J. & Leanza, A. F. 1943. La Faunula del Tremadociano inferior de Salitre (Bolivia). REV MUS LA PLATA (NUEVA SERIE), II, SEC PALEONTOL, 343–56. (Argentina.)Google Scholar
Harrington, H. J. & Leanza, A. F. 1957. Ordovician trilobites of Argentina. DEPT GEOL, UNIV KANSAS, SPEC PUB 1, 1–276.Google Scholar
Havliček, V. & Vaněk, J. 1966. The biostratigraphy of the Ordovician of Bohemia. SBORN GEOL VED, PALEONTOL 8, 7–69.Google Scholar
Hawle, I. & Corda, A. J. 1847. Prodrom einer Monographic der böhmischen Trilobiten. ABHANDL KÖNGLICHEN BÖHMISCHEN GESELLSCH WISSENSCH 5:5.Google Scholar
HenrY, J. L. 1980. Trilobites ordoviciens du Massif Armoricain. MEM SOC GÉOL MINÉRAL BRETAGNE 22, 1–250. (Rennes.)Google Scholar
Hicks, H. 1875. On the succession of the Ancient Rocks in the vicinity of St. Davids, Pembrokeshire, with special reference to those of the Arenig and Llandeilo Groups, and their Fossil Contents. Q J GEOL SOC LONDON 31, 167–95. pls 8–11.CrossRefGoogle Scholar
Hoek, H. 1912. Versteinerungen des Cambriums und Silurs. In Steinmann, G. & Hoek, H. (eds) Beitrage zur Geologie und Paläontologie von Südamerika, XVIII: Das Silur und Cambrium des Hochlandes von Bolivia und ihre Fauna. NEUES JAHRB MINERAL GEOL & PALÄONTOL 34, 209–50, pls VII-XIV.Google Scholar
Holm, G. 1882. Über einige Trilobiten aus dem Phyllograptusschiefer Dalecarliens. BIHANG TILL KONGLIGA SVENSKA VETENSKAPS-AKADEMIENS HANDLINGAR 6:9.Google Scholar
Holub, K. 1908. Prispevek ku poznani fauny pasma Dd1γ. ROZPRAVY CESKE AKADEMIE CISARE FRANTISKA JOSEFA (2) 17:10 (Prague.)Google Scholar
Holub, K. 1912. Doplnky ku faune Eulomoveho horizontu v okoli Rokycan. ROZPRAVY CESKE AKADEMIE (2) 21:33 (Prague.)Google Scholar
Horný, R. & Bastl, F. 1970. Type specimens of fossils in the National Museum Prague, Vol. 1. Trilobita. Prague: Museum of National History.Google Scholar
Howell, B. F. 1935a. Cambrian and Ordovician trilobites from Herault, southern France. J PALEONTOL 9, 222–38. pls 22–23.Google Scholar
Howell, B. F. 1935b. Some New Brunswick Cambrian agnostians. BULL WAGNER FREE INST SCI 10:2, 13–16.Google Scholar
Howell, B. F. 1959. Suborder Agnostina Salter, 1864. In Moore, R. C. (ed.) Treatise on Invertebrate Paleontology, part 0, Arthropoda 1, O172–86, figs 108–28.Google Scholar
Hsü, S. C. 1948. Parts 3, Ichangian Trilobites and other fossils. In Hsü, S. C. & Ma, C. T. (eds) The Ichang Formation and the Ichangian fauna. CONTRIB NATL RES INST GEOL, ACAD SINICA 8, 18–51.Google Scholar
Hughes, C. P. 1969. The Ordovician trilobite faunas of the Builth-Llandrindod inlier, central Wales, I. BULL BR MUS (NAT HIST), GEOL 18:3, 41–103, pls 1–14.Google Scholar
Hunt, A. S. 1967. Growth, variation, and instar development of an agnostid trilobite. J PALEONTOL 41, 203–208.Google Scholar
Jaekel, O. 1909. Über die Agnostiden. ZEITSCHR DEUTSCH GEOL GESELLSCH 61, 380–401.Google Scholar
Jago, J. B. 1973. Cambrian agnostid communities in Tasmania. LETHAIA 6, 405–21.CrossRefGoogle Scholar
Jegorova, L. I., Li-wen, Xiang, Shan-ji, Li, Run-shan, Nan & Zhen-ming, Guo 1963. [The Cambrian trilobite faunas of Kueichou and western Hunan]. SPEC PAP INSTIT GEOL MIN RES, SERIE B, STRATIGR & PALAEONTOL 3:1. [In Chinese.]Google Scholar
Jell, P. A. 1985. Tremadoc trilobites of the Digger Island Formation. Waratah Bay, Victoria. MEM NATL MUS VICTORIA (MELBOURNE) 46, 53–88, pls 19-33.CrossRefGoogle Scholar
Zailiang, Ji 1986. Upper Ordovician (Middle Caradoc–Early Ashgill) Trilobites from the Pagoda Formation in South China. PROF PAPS STRATIGR PALAEONTOL 15, 1–39.Google Scholar
Kayser, E. 1876. Ueber primordiale und untersilurische Fossilien aus der Argentinischen Republik. PALAEONTOGRAPHICA (Suppl. 3, lief 2).Google Scholar
Kayser, E. 1897. Beiträge zur Kenntniss einiger paläozoischer Faunen Süd-Amenkas. ZEITSCHR DEUTSCH GEOLO GESELLSCH 49, 274–317. pls 7–11.Google Scholar
Kennedy, R. J. 1989. Ordovician (Llanvirn) Trilobites from SW Wales. MONOGR PALAEONTOGRAPH SOC 576.Google Scholar
Khalfin, L. L. (ed.) 1960. Biostratigrafija Paleozoja Sajano–Altajskoj Gornoj Oblasti, I. Niznij Paleozoj [Palaeozoic biostratigraphy of the Sayan-Altai mining Region. Part 1, Lower Palaeozoic]. TRUDY SIBIRSKOGO NAUCHNO-ISSLEDOVATE-LSKOGO INST GEOL, GEOFIZ MINERAL SYRYA (NIIGGMS) 19. (Novosibirsk.) [In Russian.]Google Scholar
Kielan, Z. 1960. Upper Ordovician trilobites from Poland and some related forms from Bohemia and Scandinavia. PALAEONTOL POLONICA 11 (for 1959).Google Scholar
Kobayashi, T. 1931. Studies on the stratigraphy and palaeontology of the Cambro–Ordovician Formation of Huen-Lien-Chai and Niu-Hsin-Tai. South Manchuria. JAPANESE J GEOL & GEOGR 8, 131–89.Google Scholar
Kobayashi, T. 1934. The Cambro–Ordovician formations and faunas of South Chosen. Part II. Lower Ordovician faunas. J FACUL SCI, IMPERIAL UNIV TOKYO (SECT II) 3, 521–85.Google Scholar
Kobayashi, T. 1936. Cambrian and Lower Ordovician Trilobites from northwestern Canada. J PALEONTOL 10, 157–67, pl. 21.Google Scholar
Kobayashi, T. 1937. The Cambro–Ordovician Shelly Faunas of South America. J FACUL SCI, IMPERIAL UNIV TOKYO (SECT II) 4, 369–522.Google Scholar
Kobayashi, T. 1939. On the Agnostids (Part I). J FACUL SCI IMPERIAL UNIV TOKYO (SECT II) 5, 69–198.Google Scholar
Kobayashi, T. 1955. The Ordovician Fossils from the McKay Group in British Columbia, western Canada, with a note on the Early Ordovician palaeogeography. J FACUL SCI, IMPERIAL UNIV TOKYO (SECT II) 9, 355–493.Google Scholar
Kobayashi, T. 1960a. Some Ordovician fossils from East Tonkin, Viet Nam. JAPANESE J GEOL & GEOG, TOKYO 31, 39–48, pl. 5.Google Scholar
Kobayashi, T. 1960b. The Cambro–Ordovician Formations and faunas of South Korea. VI. Palaeontolog, V. J FACUL SCI, IMPERIAL UNIV TOKYO (SECT II) 12, 217–75, pls 12–14.Google Scholar
Kobayashi, T. 1960c. The Cambro–Ordovician Formations and faunas of South Korea. VII. Palaeontology VI. J FACUL SCI, IMPERIAL UNIV TOKYO (SECT II), 12, 329–420. pls 19–21.Google Scholar
Kobayashi, T. 1966. The Cambro–Ordovician formations and faunas of South Korea, Part X, Stratigraphy of the Chosen Group in Korea and South Manchuria and its relation to the Cambro–Ordovician formations of other areas, Section B. The Chosen Group of North Korea and Northeast China. J FACUL SCI, IMPERIAL UNIV TOKYO (SECT II), 16, 209–311.Google Scholar
Kobayashi, T. 1969. Stratigraphy of the Chosen Group in Korea and South Manchuria and its relation to the Cambro–Ordovician Formations of other areas. Part X, sect. D. The Ordovician of eastern Asia and other parts of the continent. J FACUL SCI, IMPERIAL UNIV TOKYO (SECT II), 17, 163–316.Google Scholar
Kobayashi, T. & Hamada, T. 1978. Upper Ordovician trilobites from the Langkawi Island, Malaysia. GEOL PALAEONTOL SE ASIA 19, 1–27. pls 1–2. (Tokyo.)Google Scholar
Kolobova, I. M. 1981. [Granulatagnostus—a new trilobite genus from the Ordovician of Kazakhstan.] ANCCCP, EZHEGODNIK VSESOYUZNOGO PALEONTOL OBSHCHESTVA 24, 257–60. (NAUKA, Leningrad.) [In Russian.]Google Scholar
Koroleva, M. N. 1982. [Ordovician trilobites of Northeast Kazakhstan.] Moskva: Nedra. [In Russian.]Google Scholar
Lake, P. 1906. A Monograph of the British Cambrian trilobites, part 1. MONOGR PALAEONTOGR SOC, 1–28, pls 1–2.Google Scholar
Lazarenko, N. P. 1966. Biostratigrafiya i nekotorye novye trilobity Verkhnego Kembriya Olenekskogo podnyatiya i Kharaulakhskikh Gor [Biostratigraphy and some new trilobites from the Upper Cambrian of the Olenek Uplift and Kharaulakh Mountain]. UCHENYE ZAPISKI, INST GEOL ARKTIK1, PALEONTOL & BIOSTRATIGR 2, 33–78. [In Russian.]Google Scholar
Legg, D. 1976. Ordovician trilobites and graptolites from the Canning Basin, Western Australia. GEOL PALAEONTOL 10, 1–37.Google Scholar
Lermontova, E. V. 1940. Klass trilobity. In Vologdin, A., Lermontova, E., Yavorsky, V. & Yanishevsky, M. (eds) Atlas rukovodjascikh form iskopaemykh faun SSSR [Atlas of the leading forms of fossil faunas in the USSR]. Volume 1, Kembriy, 112–62, pls 35–49. Moskva: Gosgeolizdat. [In Russian.]Google Scholar
Lermontova, E. V. 1951. Verchnekembrijskie trilobity i brachiopody Bosce-Kulja (severo-vostochnyy Kazakhstan) [Upper Cambrian trilobites and brachiopods from Boshche-Kul (NE Kazakhstan)]. Moskva: Vsessoyuzniy Nauchno-Issledovatelskiy Geologicheskiy Institut (VSEGEI), Gosudarstvennoe Izdatelstvo. [In Russian.]Google Scholar
Yaoxi, Li, Lisheng, Song, Zhiqiang, Zhou & Jingyao, Yang, 1975. [Stratigraphical Gazatteer of the Lower Palaeozoic, western Dabashan.] Beijing: Geological Publishing House. [In Chinese.]Google Scholar
Linnarsson, J. G. O. 1866. Om de Siluriska Bildningarne i Mellersta Westergötland. Stockholm.Google Scholar
Linnarsson, J. G. O. 1869. Om Vestergötlands Cambriska och Siluriska Aflagringar. KONGLIGA SVENSKA VETENSKAPS-AKADEMIENS HANDLINGAR 8:2.Google Scholar
Lisogor, K. A. 1961. Trilobity Tremadokskich i smeznych s nimi otlozenij Kendyktasa [Trilobites of the Tremadoc and adjacent strata of Kendyktas]. In Balashova, E. A. et al. (eds) [Ordovician of Kazakhstan IV], 55–91. pls 1–4. TRUDY GEOLOGICHESKOGO INSTITUTA 18. Akademiya Nauk, SSSR. [In Russian.]Google Scholar
Lisogor, K. A. 1971. [Trilobites from the Tremadocian succession of the Kirgiskogo Range.] NAUCNYE TRUDY KAZAKHS, POLYTEKH., MV I SSO KAZSSR. pp. 179–185. Alma-Ata. [In Russian.]Google Scholar
Lisogor, K. A. 1977. Biostratigrafija i trilobity verkhnego Kembrija i tremadoka Malogo Karatau (Juzhnyj Kazakhstan) [Biostratigraphy and trilobites of the Upper Cambrian and Tremadoc of Malago Karatau (S. Kazakhstan)]. In Zhuraleva, I. T. & Rozova, A. V. (eds) Biostratigrafija i fauna Verchnego Kembrija i pogranicnych s nim sloev [Biostratigraphy and fauna of the Upper Cambrian boundary beds. TRUDY INST GEOL & GEOFIZ 313, 3–355. Novosibirsk. [In Russian.]Google Scholar
Yien, Liu 1982. [Trilobita], pp. 290–347. pls 207-42. In The Palaeontological Atlas of Hunan. GEOL MEM, SER 2, 1. Beijing: Geological Publishing House. [In Chinese.]Google Scholar
Lochman, C. 1964. Basal Ordovician Faunas from the Williston Basin, Montana. J PALEONTOL 38, 453–76.Google Scholar
Lochman, C. 1965. Lower Ordovician (Zone D) Faunules from the Williston Basin, Montana. J PALEONTOL 39, 466–86.Google Scholar
Yanhao, Lu 1964. [Trilobita]. In Bian, Zhu, Yu, Wang & Ji, Bian (eds) [A handbook of the index fossils from South China]. Beijing: Nanjing Institute of Geology and Palaeontology, Academia Sinica. [In Chinese.]Google Scholar
Yanhao, Lu 1975. Ordovician trilobite faunas of Central and Southwestern China. PALAEONTOL SINICA, NEW SER B, 11. English version pp. 264–463.]Google Scholar
Yanhao, Lu & Huanling, Lin 1980. Cambro–Ordovician Boundary in western Zhejiang and the trilobites contained therein. ACTA PALAEONTOL SINICA 19:2, 118–35. [In Chinese with English Abstract.]Google Scholar
Yanhao, Lu & Huanling, Lin 1983. Uppermost Cambrian and Lowermost Ordovician trilobites of Jiangshan-Changshan area. Papers for the Symposium on the Cambro–Ordovician and Ordovician–Silurian Boundaries, pp. 6–11. 3 pls. Beijing: Nanjing Institute of Geology and Palaeontology. Academia Sinica.Google Scholar
Yanhao, Lu & Huanling, Lin 1984. Late Cambrian and earliest Ordovician trilobites of Jiangshan–Changshan area, Zhejiang. In Stratigraphy and palaeontology of systemic boundaries in China, Cambro–Ordovician Boundary 1, 45–143. Anhui Science and Technology Publishing House.Google Scholar
Yanhao, Lu & Yiyuan, Qian 1983. Cambro–Ordovician trilobites from eastern Guizhou. PALAEONTOL CATHAY 1, 1–106.Google Scholar
Yanhao, Lu & Tianrong, Zhou 1990. Trilobites across the Cambrian–Ordovician boundary of the transitional region of Sandu, southeastern Guizhou. PALAEONTOL CATHAY 5, 1–83. pls 1–17.Google Scholar
Yanhao, Lu, Chaoling, Chu, Yiyuan, Chien & Leewen, Hsing 1965. [Fossils of each group of China: Chinese trilobites]. 2 volumes. Beijing: Science Publ. Co. [In Chinese.]Google Scholar
Yanhao, Lu, Chaoling, Chu, Yiyuan, Chien, Zhiyi, Zhou, Junyuan, Chen, Gengwu, Liu, Wen, Yü, Xu, Chen & Hankui, Xu 1976. [Ordovician biostratigraphy and palaeozoogeography of China]. MEM NAMING INST GEOL PALAEONTOL 7. [In Chinese.]Google Scholar
Yanhao, Lu, Zhiqiang, Zhou & Zhiyi, Zhou 1986. New materials of Onychopyge faunas, with a discussion on the evolution of Onychopyge (Trilobita). BULL NANJING INST GEOL & PALAEONTOL, ACAD SINICA 7, 69–126. pls 1–7.Google Scholar
Ludvigsen, R., Westrop, S. R. & Kindle, C. H. 1989. Sunwaptan (Upper Cambrian) trilobites of the Cow Head Group, western Newfoundland, Canada. PALAEONTOGR CAN 6.Google Scholar
Luo, Hui-lin 1974. [Trilobita]. In The palaeontological atlas of Yunnan. 595–694. Vols. 1–2. Kunming, Yunnan, China: Geological Bureau of Yunnan, Peoples Press of Yunnan. [In Chinese.]Google Scholar
M'Coy, F. 1846. A synopsis of the Silurian fossils of Ireland. Dublin.Google Scholar
M'Coy, F. 1849. On the classification of some British fossil Crustacea, with notices of new forms in the university collection at Cambridge. ANN & MAG NAT HIST. LONDON, 4 (2nd sen). 161-79. 330-5, 392–414.CrossRefGoogle Scholar
Matthew, G. F. 1892. Illustrations of the fauna of the St. Johns Group. PROC & TRANS R SOC CANADA (1891) (SECT 4) 9, 33–65. pls 12–13.Google Scholar
Mergl, M. 1984. Fauna of the Upper Tremadocian of Central Bohemia. Sbornik Geologkkxch red (Journal of Geological Sciences). PALEONTOLOGIE 26, 9–46. Praha.Google Scholar
Modlínski, Z. 1990. Uwagi o biostratygrafii osadów ordowiku wschodniej czȩści obnizenia podlaskiego. KWARTALNIK GEOL 34, 585–610. [In Polish with English abstract.]Google Scholar
Moberg, J. C. & Segerberg, C. O. 1906. Bidrag til kännedomen om ceratopygeregionen med särskild hänsyn till dess utvekling i Fogelsångtrakten. Meddelande från Lunds Geologiska Fältklubb (Ser. B) 2.Google Scholar
Morris, J. 1854. A catalogue of British fossils: comprising the genera and species hitherto described: with references to their geological distribution and to the localities in which they hare been found. London.Google Scholar
Morris, S. F. 1988. A review of British trilobites, including a synoptic revision of Salters Monograph. MONOGR PALAEONTOGR SOC.Google Scholar
Morris, S. F. & Fortey, R. A. 1985. Catalogue of the type and figured specimens of Trilobita in the British Museum (Natural History). London: British Museum (Natural History).Google Scholar
Müller, K. J. & Walossek, D. 1987. Morphology, ontogeny and life habit of Agnostus pisiformis from the Upper Cambrian of Sweden. FOSSILS & STRATA 19.CrossRefGoogle Scholar
Müller, K. J. & Hinz, I. 1991. Upper Cambrian conodonts from Sweden. FOSSILS & STRATA 28.CrossRefGoogle Scholar
Murchison, R. 1839. The Silurian System. London.Google Scholar
Murchison, R. 1854. Siluria (2nd edn). London.Google Scholar
Murchison, R. 1859. Siluria (3rd edn). London.Google Scholar
Nan, Run-shan, 1985. [Trilobites from Huangbanjishan Formation of early Lower Ordovician in Northern Slope of Yilehuli Shan Heilongjiang Province.] BULL SHENYANG INST GEOL MINER RESOURCES, CHINESE ACAD GEOL SCI 12, 9–23. [In Chinese with English abstract.]Google Scholar
Neben, W. & Krueger, H. H. 1971. Fossilien ordovicisher Geschiebe. STARINGIA 1, (50 pls. no text).Google Scholar
Neuman, R. B. 1964. Fossils in Ordovician tuffs, northeastern Maine, with a section on trilobita by H. B. Whittington. US GEOL SURV BULL 1181–E.Google Scholar
Nielsen, A. T. 1992. Intercontinental correlation of the Arenigian (Early Ordovician) based on sequence and ecostratigraphy. In Webby, B. D. & Laurie, J. R. (eds) Global perspectives on Ordovician geology. 367–79, Rotterdam: Balkema.Google Scholar
Nielsen, A. T. 1995. Trilobite systematics, biostratigraphy and palaeoecology of the Lower Ordovician Komstad Limestone and Huk Formations, southern Scandinavia. FOSSILS & STRATA 38.CrossRefGoogle Scholar
Nielsen, A. T. (in press) A Catalogue of Ordovician agnostids. Geological Survey of Denmark and Greenland Report.Google Scholar
Novák, O. 1883. Zur Kenntniss der böhmischen Trilobiten. In Beiträge zur Paläontologie Österreich-Ungarns und des Orients: herausgegeben von E. Mojsisovics und M. Neumayr 3:1/2, 22–63, pls (1)8-(5)12. Wien.Google Scholar
Olin, E. 1906. Chasmopskalken och Trinucleusskiffern motsvarende Bildningarne i Skåne. Lunds Universitets Årsskrift, N.F., Afdeling 2. 2:3. (Also printed in Kungliga Fysiografiska Sällskapets Handlingar NF, 17:3.)Google Scholar
Öpik, A. A. 1967. The Mindyallan Fauna of North-Western Queensland. BUR MIN RES BULL 74, 1–404 (2 volumes).Google Scholar
Owen, A. W. & Bruton, D. 1980. Late Caradoc–early Ashgill trilobites of the central Oslo Region, Norway. PALEONTOL CONTRIB UNIV OSLO 245.Google Scholar
Owens, R. M., Fortey, R. A.. Cope, J. C. W., Rushton, A. W. A. & Bassett, M. G. 1982. Tremadoc faunas from the Carmarthen district, South Wales. GEOL MAG 119, 1–38.CrossRefGoogle Scholar
Palmer, A. R. 1955. Upper Cambrian Agnostidae of the Eureka district. Nevada. J PALEONTOL 29, 86–101, pls 19–20.Google Scholar
Palmer, A. R. 1968. Cambrian trilobites of east-central Alaska. US GEOL SURV PROF PAP 559–B.Google Scholar
Patte, F. 1926. Etude paléontologiques relatives a la géologie de l'est du Tonkin (Paléozoique et Trias). BULL SERV GÉOL L'INDOCHINE 15, 5–240, pls I-XII.Google Scholar
Pek, I. 1969. Corrugatagnostus refragor sp.n. (Trilobita) from the Llanvirnian of the Barrandian Region. VEST USTREDNIHO USTAVU GEOL 44, 383–4.Google Scholar
Pek, I. 1970. Granuloagnostus g.n. (Trilobita) from the Sarka Formation of the Barrandian area. SBORNIK PRACI PRIRODOVEDECKE FAKUL UNIV PALACKEHO V OLOMOUCI, GEOGR–GEOL. 29:10, 129–30.Google Scholar
Pek, I. 1977. Agnostid trilobites of the Central Bohemian Ordovician. SBORNIK GEOL VED, PALEONTOL 19, 7–44.Google Scholar
Pek, I. & Prokop, R. J. 1984. New finds of the Agnostid trilobites from the Ordovician of the Prague area (Czechoslovakia). CASOPIS NARODNIHO MUZ, RADA PRIRODOVEDNA 153, 17–20.Google Scholar
Pek, I. & Smola, M. 1989. Leiagnostus ariel sp.n. (Trilobita) from the Klabava Formation (Ordovician, Barrandian). CASOPIS PRO MINER GEOL 34, 195–7.Google Scholar
Shanchi, Peng 1983. Cambrian–Ordovician Boundary in the Cili-Taoyuan Border Area, Northwestern Hunan. In Papers for the Symposium on the Cambrian–Ordovician and Ordovician–Silurian Boundaries. 44–52. Nanjing Institute of Geology and Palaeontology, Academia Sinica.Google Scholar
Shanchi, Peng 1984. Cambrian–Ordovician boundary in the Cili–Taoyuan border area, northwestern Hunan with descriptions of relative trilobites. In Stratigraphy and paleontology of Systemic Boundaries in China. Cambrian–Ordovician boundary (1). 285–405. Anhui Science and Technology Publishing House.Google Scholar
Shanchi, Peng 1990. Trilobites from the Panjiazui Formation and the Madaoyu Formation in Jiangnan Slope Belt. BERINGERIA 2, 55–171.Google Scholar
Perner, J. 1918. Trilobiti pásma D-d1γ z okoli prazskeho. CESKE AKAD CISARE FRANTISKA JOSEFA, TR. 2 (PALAEONTOGR BOHEMIAE) 9. [Summary in German.]Google Scholar
Petrunina, Z. E. 1966. Trilobity i biostratigrafija Tremadoka Zapadnoj casti Sajano-Altajskoj Gornoj Oblasti [Trilobites and Tremadoc biostratigraphy in the western part of the Sayan-Altai Mountain Range]. Synopsis of Dissertation. Institut geologiceckich, Akademija NAUK Kazakhskoj SSR. Alma-Ata. [In Russian.]Google Scholar
Pillet, J. 1978. Revision des Agnostidae de L'Ordovicien Inferieur de la Montagne Noire. In Capera, J. C, Courtessole, R. and Pillet, J. (eds) Contribution à l'etude de l'Ordovicien inférieur de la Montagne Noire. Biostratigraphie et révision des Agnostida. ANN SOC GÉOL DU NORD 98, 67–86. pls 5-7.Google Scholar
Pillet, J., Courtessole, R. & Vizcaino, D. 1985. Paleontologie Systematique. In Courtessole, R., Pillet, J., Vizcaino, D. & Eschard, R. (eds) Etude Biostratigraphique et seditnentologique des formations arenacees de l'Arenigien du saint Chinianais Oriental (Herault) Versant sud de la Montagne Noire (France Meridionale), 37–48. pls 1–12. Memoire de la Societe d'Etudes scientifiques de l'Aude 89. rue de Verdun–11000 Carcassonne, France.Google Scholar
Pokrovskaja, N. V. 1958. Agnostidy Srednego Kambriya Yakutii, Chast 1. TRUDY GEOL INST 16. [In Russian.]Google Scholar
Pospelov, A. G. & Fedjanina, E. S. 1958. [New data on the Lower palaeozoic stratigraphy of the Shorii Mtns.] In [New data on the stratigraphy of Western Siberia.] Zapadno-Sibirskoe Geologicheskoe Upravlenie, Materialy po geologii Zapadnoj Sibiri, 61, 86–89. Moscow. [In Russian.]Google Scholar
Postlethwaite, J. 1885. Trilobites of the Skiddaw Slates. TRANS CUMBERLAND ASS 10, 71–100.Google Scholar
Postlethwaite, J. & Goodchild, J. G. 1886. On some trilobites from the Skiddaw Slates. PROC GEOL ASS 9, 455–469. pls 6–9.CrossRefGoogle Scholar
Poulsen, V. 1965. An Early Ordovician trilobite fauna from Bornholm. MEDDEL DANSK GEOL FOREN 16, 49–113.Google Scholar
Pratt, B. R. 1988. An Ibexian (Early Ordovician) trilobite faunule from the type section of the Rabbitkettle Formation (southern Mackenzie Mountains, Northwest Territories). CAN J EARTH SCI 25, 1595–607.CrossRefGoogle Scholar
Pratt, B. R. 1992. Trilobites of the Marjuman and Steptoean stages (Upper Cambrian), Rabbitkettle Formation, southern Mackenzie Mountains, northwest Canada. PALAEONTOGR CAN 9.Google Scholar
Přibyl, A. & Vaněk, J. 1968. Einige Trilobiten aus dem böhmischen Ordovizium. VESTNIK USTREDNIHO USTAVU GEOL 43, 191–7.Google Scholar
Přibyl, A. & Vaněk, J. 1980. Ordovician trilobites of Bolivia. Rozpravy Československé Akademie Věd (Řada Matematických a přirodnich rěd), 90:2.Google Scholar
Hongan, Qiu, Yanhao, Lu, Zhaoling, Zhu, Dechang, Bi, Tianrui, Lin, Zhiyi, Zhou, Quanzhong, Zhang, Yuyuan, Qian, Tianyin, Ju, Nairen, Han & Xiuzhe, Wei 1983. [Trilobita]. In Palaeontological Atlas of east China. I. 28–254, pls 11-88. Beijing: Geological Publishing House. [In Chinese.]Google Scholar
Rábano, I., Pek, I. & Vaněk, J. 1985. New Agnostina (Trilobita) from the Llanvirn (Ordovician) of Spain. ESTUD GEOL 41, 439–45.CrossRefGoogle Scholar
Rábano, I. 1989. Trilobites del Ordovicico Medio del sector meridional de la zona Centroibérica española. Parte II: Agnostina y Asaphina. BOL GEOL MIN 100, 541–609.Google Scholar
Rasetti, F. 1944. Upper Cambrian trilobites from the Levis Conglomerate. J PALEONTOL 18, 229–58. pls 36–9.Google Scholar
Rasetti, F. 1954. Early Ordovician trilobite faunules from Quebec and Newfoundland. J PALEONTOL 28, 581–7, pls 60–61.Google Scholar
Raymond, P. E. 1913. Some changes in the names of genera of trilobites. OTTAWA NATURALIST 26:11, 137–42.Google Scholar
Raymond, P. E. 1924. New Upper Cambrian and Lower Ordovician trilobites from Vermont. PROC BOSTON SOC NAT HIST 37, 390–466. pls 12–14.Google Scholar
Raymond, P. E. 1925. Some trilobites of the lower Middle Ordovician of eastern North America. BULL MUS COMP ZOOL, HARVARD UNIV, 67, 1–180, pls 1–10.Google Scholar
Reed, F. R. C. 1903. The Lower Palæozoic trilobites of the Girvan District, Ayrshire. Part 1. MONOGR PALAEONTOGR SOC, 1–48, pls 1–6.Google Scholar
Reed, F. R. C. 1915. Supplementary memoir on new Ordovician and Silurian fossils from the Northern Shan States. PALAEONTOL INDICA, MEM (NEW SER) 6(1).Google Scholar
Regnéll, G. 1942. Stratigraphical and paleontological remarks on the Lower Ordovician of Central and Northern Öland. MEDDEL LUNDS GEOL–MINER INST 99.Google Scholar
Repina, L. N., Petrunina, Z. E. & Hajrullina, T. I. 1975. [Trilobita.] In Repina, L. N. et al. (eds) Stratigrafija i fauna Nizhnego Paleozoja severnykh predgorij Turkestanskogo i Alajskogo Khrebtov (juzhnyj Tyan-Shan) [Stratigraphy and fauna of the Lower Palaeozoic of the northern submontane belt of Turkestan and the Alai Ridges (southern Tian-Shan)]. 100–351, pls 7-48. TRUDY INST GEOL & GEOPHIZ 278. [In Russian.]Google Scholar
Robison, R. A. 1972. Mode of life of agnostid trilobites. INT GEOL CONGRESS (24th SESS) 7, 33–40. (Montreal.)Google Scholar
Robison, R. A. & Pantoja-Alor, J. 1968. Tremadocian trilobites from the Nochixtlán Region, Oaxaca, Mexico. J PALEONTOL 42, 767–800, pls 97–104.Google Scholar
Romanenko, E. V. & Romanenko, M. F. 1967. Nekotorye voprosy paleogeografii i trilobuty Kembriya Gornogo Altaya [Some problems of palaeogeography and Cambrian trilobites of the Altai Mountains]. IZVEST ALTAYSKOGO OTDELA GEOG OBSHCHESTVA SOYUZA SSR 8, 62–93. [In Russian.]Google Scholar
Romano, M. & Owen, A. W. 1993. Early Caradoc trilobites of eastern Ireland and their palaeogeographical significance. PALAEONTOLOGY 36, 681–720.Google Scholar
Ross, R. J. jr. 1958. Trilobites in a pillow-lava of the Ordovician Valmy Formation, Nevada. J PALEONTOL 32, 559–70, pls 83–4.Google Scholar
Ross, R. J. jr. 1967. Some Middle Ordovician Brachiopods and Trilobites From the Basin Ranges, Western United States. US GEOL SURV PROF PAP 523–D.Google Scholar
Ross, R. J. jr. 1970. Ordovician brachiopods, trilobites and stratigraphy in eastern and central Nevada. US GEOL SURV PROF PAP 639.Google Scholar
Ross, R. J. jr. 1972. Fossils from the Ordovician bioherms at Meiklejohn-Peak, Nevada. US GEOL SURV PROF PAP 685.Google Scholar
Rusconi, C. 1951. Mas trilobitas Cambricos de san Isidro Cerro Pelado v Canota. REV DEL MUS HIST NAT MENDOZA 5, 3–30.Google Scholar
Rushton, A. W. A. 1988. Tremadoc trilobites from the Skiddaw Group in the English Lake District. PALAEONTOLOGY 31, 677–98. pls 66-8.Google Scholar
Rushton, A. W. A. & Hughes, C. P. 1981. The Ordovician trilobite fauna of the Great Paxton Borehole, Cambridgeshire. GEOL MAG 118, 623–46.CrossRefGoogle Scholar
Salter, J. W. 1848. Palaeontological Appendix to Professor John Phillips Memoir on the Malvern Hills compared with the Palaeozoic Districts of Abberley etc. In Phillips, J. (ed.) The Malvern Hills, compared with the Palaeozoic Districts of Abberley, Woodhope, May Hill, Tortworth and Usk. MEM GEOL SURV GB 2, 331–86.Google Scholar
Salter, J. W. 1864. Figures and descriptions illustrative of British Organic Remains. MEM GEOL SURV (Dec.) 11.Google Scholar
Schmidt, F. 1894. Revision der ostbaltischen silurischen Trilobiten, Abt. IV. MEM L'ACAD IMPERIALE SCI ST.-PETERSBOURG (SER VII) 42:5.Google Scholar
Schuchert, C. & Dunbar, C. O. 1934. Stratigraphy of western Newfoundland. GEOL SOC AM MEM 1.Google Scholar
Sdzuy, K. 1955. Die fauna der Leimitz-Schiefer (Tremadoc). ABH SENCKENBERG NATURFORSCH GES 492, 1–74.Google Scholar
Sdzuy, K. 1958. Fossilien aus dem Tremadoc der Montagne Noire. SENCKENBERGIANA LETHAEA 39, 255–85.Google Scholar
Shaw, A. B. 1951. The Paleontology of Northwestern Vermont. I. New Late Cambrian Trilobites. J PALEONTOL 25, 97–114, pls 97-114.Google Scholar
Sheng, S. F. 1964. Upper Ordovician trilobite faunas of Szechuan–Kweichow with special discussion on the classification and boundaries of the Upper Ordovician. ACTA PALAEONTOL SINICA 12, 537–63.Google Scholar
Sheng, X. 1974a. [The age of the Dalmanitina Beds in China]. In [Subdivision and correlation of the Ordovician System in China], 53–95. Beijing: Geological Publishing House. [In Chinese.]Google Scholar
Xinfu, Sheng 1974b. [Ordovician trilobites from western Yunnan and their stratigraphical significance]. In Xinfu, Sheng (ed.) [Subdivision and correlation of the Ordovician System in China], 96–140. Beijing: Geological Publishing House. [In Chinese.]Google Scholar
Xinfu, Sheng & Zailiang, Ji 1987. On the age of the Pagoda Formation. PROF PAP STRATIGR & PALAEONTOL 16, 1–36. [In Chinese with English abstract.]Google Scholar
Shergold, J. 1972. Late Upper Cambrian trilobites from the Gola Beds, western Queensland. BUR MINER RES, GEOL & GEOPHYS, AUSTRALIA, BULL 112.Google Scholar
Shergold, J. 1975. Late Cambrian and early Ordovician trilobites from the Burke River structural belt, western Queensland. BUR MINER RES, GEOL & GEOPHYS, AUSTRALIA, BULL 153.Google Scholar
Shergold, J. 1977. Classification of the trilobite Pseudagnostus. PALAEONTOL 20, 69–100, pls 15–16.Google Scholar
Shergold, J. H. 1980. Late Cambrian trilobites from the Chatsworth Limestone, western Queensland. BUR MINER RES, GEOL & GEOPHYS, AUSTRALIA, BULL 186.Google Scholar
Shergold, J. H. 1991. Protaspid and early meraspid growth stages of the eodiscoid trilobite Pagetia ocellata Jell, and their implications for classification. ALCHERINGA 15, 65–86.CrossRefGoogle Scholar
Shergold, J. H. & Cooper, R. A. 1985. Late Cambrian trilobites from the Mariner Group, northern Victoria Land, Antarctica. BMR J AUSTRALIAN GEOL & GEOPHYS 9, 91–106.Google Scholar
Shergold, J. H. & Sdzuy, K. 1984. Cambrian and early Tremadocian trilobites from Sultan Dag, central Turkey. SENCKENBERGIANA LETHAEA 65, 51–135.Google Scholar
Shergold, J. H., Laurie, J. R. & Xiaowen, Sun 1990. Classification and review of the trilobite order Agnostida Salter, 1864: an Australian perspective. BUR MINER RES, GEOL & GEOPHYS, REP 296.Google Scholar
Sinjakov, V. I. & Fedjanina, E. S. 1962. [Lower Ordovician deposits of the Kazskogo iron ore layer in the Sorii Mtns.] In [New data on the palaeontology and stratigraphy of Western Siberia.] MATERIAL GEOL ZAPADNOJ SIBIRI 63, 41–55. (Tomsk.) [In Russian.]Google Scholar
Skjeseth, S. 1952. On the Lower Didymograptus Zone (3b) at Ringsaker, and contemporaneous deposits in Scandinavia NORSK GEOL TIDSSKR 30, 137–82.Google Scholar
Stait, B., Burrett, C. & Wongwanich, T. 1984. Ordovician trilobites from the Tarutao Formation Southern Thailand. NEUES JAHRB GEOL & PALÄONTOL, MONATSHEFTE 1, 53–64.Google Scholar
Strand, T. 1948. New trilobites from the Hølonda Limestone (Trondheim region, southern Norway). NORSK GEOL TIDSSKR 27, 74–88.Google Scholar
Stubblefield, C. J. & Bulman, O. M. B. (eds) 1927. The Shineton Shales of the Wrekin District. Q J GEOL SOC LONDON 83, 96–146.CrossRefGoogle Scholar
Stubblefield, C. J. 1933. Notes on fossils. In Smith, S. (ed.) 1933. On the occurrence of Tremadoc shales in the Tortworth Inlier (Gloucestershire). Q J GEOL SOC LONDON 89, 357–77, pl. 34.Google Scholar
Størmer, L. 1922. Om nogen fossilfund fra etagen 3ax ved Vækkerø, Kristiania. NORSK GEOL TIDSSKR 6, 1–16.Google Scholar
Suárez-Soruco, R. 1975. Nuevos trilobites del Tremadociano inferior (Ordovicico) del sur de Bolivia. REVIS TEC YACIMIENTOS PETROL FISCALES BOLIVIANOS 4, 129–46.Google Scholar
Sun, Y. C. 1924. Contributions to the Cambrian faunas of China. PALAEONTOL SINICA (SER B) 1(4).Google Scholar
Zhenhua, Sun 1984. [Trilobita.] In Regional geological Surveying Team of Hubei: [The Palaeontological Atlas of Hubei Province]. 328–422, pls 119-71. Wuhan: Hubei Science and TechnologyPress. [In Chinese.]Google Scholar
Xiaowen, Sun 1989. Cambrian Agnostids from the North China Platform. PALAEONTOL CATHAYANA 4, 53–129.Google Scholar
Thomas, A. T., Owens, R. M. & Rushton, A. W. A. 1984. Trilobites in British stratigraphy. GEOL SOC, LONDON, SPEC REP 16.Google Scholar
Thoral, M. 1935. Contribution a Fétude paléontologique de l'Ordovicien inférieur de la Montagne Noir. Theses présentées a la Faculté des Sciences de l'Université de Paris (Serie A) 1541. (Montpellier.)Google Scholar
Thoral, M. 1946. Cycles geologiques et formations nodulifères de la Montagne Noire. NOUV ARCH MUS HIST NATUR LYON 1.Google Scholar
Thorslund, P. 1940. On the Chasmops Series of Jemtland and Södermanland (Tvären). SVER GEOL UNDERS C436.Google Scholar
Tjernvik, T. E. 1956. On the early Ordovician of Sweden. Stratigraphy and fauna. BULL GEOL INST UNIV UPPSALA 36, 107–284.Google Scholar
Tortello, M. F. & Aceñolaza, G. F. 1993. Trilobites Agnóstidos del límite Cámbrico-Ordovicico de la Formatión Lampazar, Sierra de Cajas, provincia de Jujuy, Argentina. REVIS ESPANOLA PALEONTOL 8, 177–84.Google Scholar
Tripp, R. P. 1965. Trilobites from the Albany division (Ordovician) of the Girvan district, Ayrshire. PALAEONTOLOGY 8, 577–603.Google Scholar
Tripp, R. P. 1976. Trilobites from the basal superstes Mudstones (Ordovician) at Aldons Quarry, near Girvan, Ayrshire. TRANS R SOC EDINBURGH: EARTH SCI 69, 369–423.Google Scholar
Tripp, R. P., Zhiyi, Zhou & Zhen-qin, Pan 1989. Trilobites from the Upper Ordovician Tangtou Formation, Jiangsu Province, China. TRANS R SOC EDINBURGH: EARTH SCI 80, 25–68.CrossRefGoogle Scholar
Troedsson, G. T. 1937. On the Cambro–Ordovician faunas of Western Quruq Tagh, Eastern Tien-shan. PALEONTOL SINICA (NEW SER B) 2.Google Scholar
Vaněk, J. 1965. Die Trilobiten des mittelböhmischen Tremadoc. SENCKENBERG LETHAEA 46(4-6), 263–308, pls 22-6.Google Scholar
Varganov, V. G., Ancygin, N. Ya.. Nasedkina, V. A., Shurygina, M. V. & Militsina, V. S. 1973. Stratigrafiya i fauna ordovika srednego Urala [The Ordovician stratigraphy and fauna of the central Urals]. Uralskoe Territorialnoe geologiceskoe Upravlenie. Moscow: NEDRA. [In Russian.]Google Scholar
Verneuil, E. 1847. Remarques sur les fossiles Paléozoiques communs à l'Amerique et a l'Europe, et sur les rapports qu'ils offrent dans leur distribution. BULL SOC GÉOL FRANCE (2ND SER) 4, 688–710.Google Scholar
Vogdes, A. W. 1892. Notes on Palaeozoic Crustacea No. 2. On the North American species of the genus Agnostus. AMERICAN GEOLOGIST 9, 377–396, pls 9-10.Google Scholar
Vogdes, A. W. 1893. A Classed and Annotated Bibliography of the Palæozoic Crustacea 1698–1892 to which is added a Catalogue of North American species. OCC PAPS CALIFORNIA ACAD SCI 4.Google Scholar
Wahlenberg, G. 1818. Petrificata Telluris Svecanae. NOVA ACTA REG SOC SCIE UPSALIENSIS 8.Google Scholar
Wandås, B. T. G. 1984. The Middle Ordovician of the Oslo region, Norway, 33. Trilobites from the lowermost part of the Ogygiocaris Series. NORSK GEOL TIDSSK 63, 211–67.Google Scholar
Webby, B. D. 1973. Remopleurides and other Upper Ordovician trilobites from New South Wales. PALAEONTOLOGY 16, 445–75, pls 51–5.Google Scholar
Weber, V. N. 1948. Trilobity silurijskich otlozenij SSSR. Bypuck 1. Niznesilunjskie trilobity [Trilobites of the Silurian beds. No. 1. Lower Silurian trilobites]. MONOGRAF PALEONTOL USSR 69(1). [In Russian.]Google Scholar
Weir, J. A. 1959. Ashgillian trilobites from Co. Clare, Ireland. PALAEONTOL 1, 369–83, pls 62–3.Google Scholar
Westergård, A. H. 1922. Sveriges Olenidskiffer. SVERIG GEOL UNDERS C18.Google Scholar
Westrop, S. R. 1986. Trilobites of the Upper Cambrian Sunwaptan Stage, southern Canadian Rocky Mountains, Alberta. PALAEONTOGR CAN 3.Google Scholar
Whitehouse, F. W. 1936. The Cambrian of North-Eastern Australia. MEM QUEENSLAND MUS 11, 59–112, pls 8-10.Google Scholar
Whittard, W. F. 1940. The Ordovician trilobite fauna of the Shelve–Corndon District, West Shropshire. Part 1. ANN MAG NAT HIST (SER 11) 5, 153–72. pls 5-6.CrossRefGoogle Scholar
Whittard, W. F. 1955. The Ordovician trilobites of the Shelve Inlier, West Shropshire, part 1. MONOGR PALAEONTOGR SOC, 1–40, pls I-IV.Google Scholar
Whittard, W. F. 1966. The Ordovician trilobites of the Shelve Inlier. West Shropshire, part 8. MONOGR PALAEONTOGR SOC, pp. 265–306, pls XLVI-L.CrossRefGoogle Scholar
Whittington, H. B. 1950. Sixteen Ordovician genotype trilobites. J PALEONTOL 24, 531–65. pls 68–75.Google Scholar
Whittington, H. B. 1963. Middle Ordovician trilobites from Lower Head, western Newfoundland. BULL MUS COMP ZOOL, HARVARD UNIV, 129, pp. 1–118.Google Scholar
Whittington, H. B. 1965. Trilobites of the Ordovician Table Head Formation, western Newfoundland. BULL MUS COMP ZOOL, HARVARD UNIV, 132, 275–442.Google Scholar
Whittington, H. B. 1968. The Ordovician trilobites of the Bala Area, Merioneth, Part 4. MONOGR PALAEONTOGR SOC. 93–138. pls XXIX-XXXII.CrossRefGoogle Scholar
Whittington, H. B. 1992. Trilobites. Woodbridge, Suffolk. GB: The Boydell Press.Google Scholar
Wilson, J. L. 1954. Late Cambrian and Early Ordovician trilobites from the Marathon uplift, west Texas. J PALEONTOL 28, 249–85, pls 24–7.Google Scholar
Wiman, C. 1905. Ein Shumardia-schiefer bei Lanna in Nerike. ARKIV ZOOL 2, 1–20.Google Scholar
Winston, D. & Nicholls, H. 1967. Late Cambrian and early Ordovician faunas from the Wilberns Formation of central Texas. J PALEONTOL 41, 66–96, pls 9-13.Google Scholar
Wolfart, R. 1970. Fauna, Stratigraphie und Palaogeographie des Ordoviziums in Afghanistan. BEIHEFTE ZUM GEOLOG JAHRB 89, 1–125.Google Scholar
Shufang, Xia 1978. [Ordovician trilobites.] In Research Groups of the Gorge District of the Yangtze, Geological Bureau of Hubei Province: [Sinian to Permian stratigraphy and palaeontology of East Yangtze Gorge area]. 157-85, pls 28-37. Beijing: Geological Publishing House. [In Chinese.]Google Scholar
Shufang, Xia, Xioying, Liu & Beiling, Liu 1979. Preliminary studies on the Late Ordovician trilobites from the Lun Shan Area in Julong of Jiangsu, p. 15 (Abstract). Abstract of papers, 12th annual conference and 3rd national congress of the Palaeontological Society of China. Suzhou.Google Scholar
Liwen, Xiang & Zailing, Ji 1986. [Upper Ordovician (Ashgill) trilobites from the Linxiang Formation of western Hunan and eastern Guizhou.] BULL CHINESE ACAD GEOL SCI 12, 53–66. [In Chinese with English abstract.]Google Scholar
Liwen, Xiang & Zailing, Ji 1988. Upper Ordovician (middle Ashgillian) trilobites from the Linxiang Formation in southern China. PROF PAP STRATIGR & PALAEONTOL 19, 1–20. [In Chinese with English abstract.]Google Scholar
Liwen, Xiang & Tianmei, Zhou 1987. [Trilobita.] In Xiaofeng, Wang et al. (eds) Biostratigraphy of the Yangtze Gorge Area (2). Early Palaeozoic Era, 294–335, pls 30-40. Beijing: Geological Publishing House. [In Chinese.]Google Scholar
Gongsheng, Yin & Shanji, Li 1978. [Trilobita]. In [Fossils of South–west China: Guizhou], 1 (Cambrian–Devonian periods), 385–594. pls 144–92. Beijing: Geological Publishing House. [In Chinese.]Google Scholar
Young, G. E. 1973. An Ordovician (Arenigian) trilobite faunule of great diversity from the Ibex area, western Utah. BRIGHAM YOUNG UNIV GEOL STUD 20, 91–115.Google Scholar
Tairong, Zhang 1981. [Trilobita.] In [Palaeontological Atlas of northwest China. Xinjiang (1)]. 134–213, pls 54–79. Beijing: Geological Publishing House. [In Chinese.]Google Scholar
Jin-lin, Zhang & Shao-xin, Wang 1985. [Trilobita.] In [Palaeontological handbook of North China, Palaeozoic volume (1)], 327–488. pls 103-47. [In Chinese.]Google Scholar
Tien-Mei, Zhou, Li-Jeng, Liu, Sien-Sung, Mong & Zheng-Hua, Sun 1977. [Trilobita.] In Xiao-Feng, Wang and Yu-Qin, Jin (eds) [Palaeontological handbook of central and southern China, part. 1, Early Palaeozoic Era], 104–266, pls 33-81. Beijing: Earth Science Press.Google Scholar
Tian-Rong, Zhou 1981. New materials of early Tremadocian trilobites from Sandu and Puan, Guizhou. ACTA PALAEONTOL SINICA 20, 241–6.Google Scholar
Zhiyi, Zhou & Jinlin, Zhang 1978. Cambrian-Ordovician boundary of the Tangshan area with descriptions of the related trilobite fauna. ACTA PALAEONTOL SINICA 17, 1–26, pls 1-4. [In Chinese, English summary.]Google Scholar
Zhiqiang, Zhou, Jingsen, Li & Xinguo, Qu 1982. [Trilobita.] In [Palaeontological Atlas of northwest China: Shanxi, Gansu and Ningxia Volume, Part 1, Precambrian to early Palaeozoic]. 215–94, pls 57-72. Beijing: Geological Publishing House. [In Chinese.]Google Scholar
Zhiyi, Zhou & Jinlin, Zhang 1985. Uppermost Cambrian and lowest Ordovician trilobites of north and northeast China. Stratigraphy and Palaeontology of systematic boundaries in China. Cambrian-Ordovician boundary (2), pp. 63-163, 29 pls. Anhui Science and technology Publishing House.Google Scholar
Zhiyi, Zhou & Dean, W. T. 1986. Ordovician trilobites from Chedao, Gansu Province, North-west China. PALAEONTOLOGY 29, 743–86, pls 58–65.Google Scholar
Zhiyi, Zhou 1987. Notes on Chinese Ordovician Agnostids. ACTA PALAEONTOL SINICA 26, 639–61.Google Scholar