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The Devonian styginid trilobite Paralejurus, with new data from Spain and Morocco
Published online by Cambridge University Press: 20 May 2016
Abstract
A review of all known species of the scutelluine trilobite Paralejurus corroborates its distinction from contemporaneous representatives of the subfamily. The overall morphology together with observed habitat conditions favor the view of its having had a semiendobenthic life habit analogous to that of many earlier illaenids. Particular features that are shared with the Silurian Rhaxeros, such as the pronounced convexity of the exoskeleton and the wide axis, are considered as homeomorphies related to a burrowing lifestyle rather than the expression of phyletic relationships. The data set based on conodont biostratigraphy reveals earliest occurrences of Paralejurus in the Pragian and the disappearance of last representatives at the base of the Middle Devonian. In the lower Early Devonian Paralejurus was restricted to the North Gondwana margin and related microplates. Later and in consequence of geodynamic plate movements that led to the reduction of oceanic barriers, the Paralejurus dormitzeri group succeeded in spreading to the epicontinental margin of Laurussia in Late Emsian times. New material from Southern Morocco, including Paralejurus spatuliformis n. sp. and Paralejurus tenuistriatus n. sp., and the first representative of the genus from Spain, Paralejurus carlsi n. sp., are described. Paralejurus dormitzeri rehamnanus Alberti, 1970 is considered an independent species emphasized by the discovery of complete exoskeletons.
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References
Adrain, J. M., and Chatterton, B. D. E. 1994. The aulacopleurid trilobite Otarion, with new species from the Silurian of Northwestern Canada. Journal of Paleontology, 68:305–323.Google Scholar
Alberti, G. K. B. 1970. Trilobiten des jüngeren Siluriums sowie des Unter- und Mitteldevons, II. Abhandlungen der senckenbergischen naturforschenden Gesellschaft, 525:1–233.Google Scholar
Alberti, G. K. B. 1981. Trilobiten des jüngeren Siluriums sowie des Unter- und Mittel-Devons, III. Senckenbergiana lethaea, 62:1–75.Google Scholar
Alberti, G. K. B. 1983. Trilobiten des jüngeren Siluriums sowie des Unter- und Mittel-Devons, IV. Senckenbergiana lethaea, 64:1–87.Google Scholar
Alberti, G. K. B. 2000. Zur paläobiogeographischen Verbreitung der Struveaspis micrommal Eopalpebralia herrmanni-Assemblage (Herzynische Trilobiten) im jüngeren Unter-Devon. Senckenbergiana lethaea, 79:357–360.Google Scholar
Alberti, H. 1981. Lochkovium/Pragium-Trilobiten aus der Harzgeröder Faltenzone (Harz). Neues Jahrbuch für Geologie und Paläontologie, Abhandlungen, 162:164–187.Google Scholar
Ancigin, N. J. 1979. Trilobita. Monographic description of faunas from Eifelian bauxite deposits of the Urals, pt IV, Report of the Ministry of Geology RSFSR, 122 p. (In Russian)Google Scholar
Barrande, J. 1846a. Notice préliminaire sur le Système Silurien et les trilobites de Bohême. Verlag C.L. Hirschfeld, 97 p.Google Scholar
Barrande, J. 1846b. Nouveaux Trilobites. Supplément à la notice préliminaire sur le Système Silurien et les trilobites de Bohême. I–IV, 40 p.Google Scholar
Barrande, J. 1852. Système Silurien du centre de la Bohême. I. Recherches Paléontologiques 1: Crustacés: Trilobites, 935 p., 51 pls.Google Scholar
Basse, M. 1996. Trilobiten aus mittlerem Devon des Rhenohercynikums. I. Corynexochida und Proetida (1). Palaeontographica, Abteilung A, 239:89–182.Google Scholar
Berdan, J. M. 1986. The Silurian and Early Devonian biogeography of ostracodes in North America, p. 185–191. In McKerrow, W. S. and Cocks, L. R. M. (eds.), Oceans, island arcs and olistostroms: The use of fossils in distinguishing sutures, terraines and environments around the Iapetus Ocean. Journal of the Geological Society of London, 143.Google Scholar
Bergström, J. 1973. Organization, life, and systematics of trilobites. Fossils and Strata, 2:1–69.Google Scholar
Burhenne, H. 1899. Beitrag zur Kenntnis der Fauna der Tentaculitenschiefer im Lahngebiet. Abhandlungen der preussischen geologischen Landesanstalt (neue Folge), 29:1–56.Google Scholar
Carls, P., and Valenzuela-Ríos, J. I. 2002. Early Emsian Conodonts and associated shelly faunas of the Mariposa Fm (Iberian Chains, Aragon, Spain), p. 315–333. In García-Lopez, S. and Bastida, F. (eds.), Palaeozoic Conodonts from Northern Spain. Guadernos del Museo Geominero, 1, Madrid.Google Scholar
Chlupáč, I. 1983. Trilobite assemblages in the Devonian of the Barrrandian area and their relations to palaeoenvironments. Geologica et Palaeontologica, 17:45–73.Google Scholar
Chlupáč, I. 1985. Comments on the Lower-Middle Devonian boundary. Courier Forschungsinstitut Senckenberg, 75:389–400.Google Scholar
Chlupáč, I., and Lukeš, P. 1999. Pragian/Zlíchovian and Zlíchovian/Dalejan boundary sections in the Lower Devonian of the Barrandian area, Czech Republic. Newsletter on Stratigraphy, 37:75–100.CrossRefGoogle Scholar
Chlupáč, I., Feist, R., and Morzadec, P. 2000. Trilobites and standard Devonian Stage Boundaries. Courier Forschungsinstitut Senckenberg, 220:87–98.Google Scholar
Chlupáč, I., Jaeger, H., and Zikmundova, J. 1972. The Silurian-Devonian Boundary in the Barrandian. Bulletin of Canadian Petroleum Geology, 20:104–174.Google Scholar
Dalman, J. W. 1827. Om Palaeaderna eller de så kallade Trilobiterna. Kongliga Svenska Vetenskaps-Akademiens Handlingar, 1826(2):113–162, 226–294.Google Scholar
Dekay, J. E. 1824. Observations of the structure of trilobites, and description of an apparently new genus. With notes on the geology of Trenton Falls, by James Renwick. Annals of the Lyceum of Natural History of New York, 1:174–189.Google Scholar
Ellermann, I. 1992. Trilobiten aus dem Unterdevon der Karnischen Alpen (Österreich). Palaeontographica, Abteilung A, 221:1–62.Google Scholar
Erben, H. K. 1967. Bau der Segmente und der Randbestachelung im Pygidium der Scutelluidae (Tril.). Neues Jahrbuch für Geologie und Paläontologie, Abhandlungen, 129:1–64.Google Scholar
Feist, R. 1974. Devonische Scutelluidae (Trilobiten) aus der östlichen Montagne Noire (Südfrankreich). Palaeontographica, Abteilung A, 147:70–114.Google Scholar
Fisher, D. C. 1975. Swimming and burrowing in Limulus and Mesolimulus. Fossils and Strata, 4:281–290.CrossRefGoogle Scholar
Fortey, R. 1986. The type species of the Ordovician trilobite Symphysurus: systematics, functional morphology and terrace ridges. Paläontologische Zeitschrift, 60:255–275.Google Scholar
Frech, F. 1887. Die paläozoischen Bildungen von Cabrières (Languedoc). Zeitschrift der deutschen geologischen Gesellschaft, 39:360–488.Google Scholar
García-Lopez, S., and Bastida, F. 2002. Preface, p. v–vi. In García-Lopez, S. and Bastida, F. (eds.), Palaeozoic Conodonts from Northern Spain. Guadernos del Museo Geominero, 1, Madrid.Google Scholar
Gigout, M. 1951. Études Géologiques sur la Meseta Marocaine Occidentale (arrière-pays de Casablanca, Mazagan et Safi). Notes et Mémoires (Notes du Service de Mines et de la Carte géologique du Maroc), 86:1–507.Google Scholar
Harrington, H. J., Henningsmoen, G., Howell, B. F., Jaanusson, V., Lochman-Balk, C., Moore, R. C., Poulsen, C., Rasetti, F., Richter, E., Richter, R., Schmidt, H., Sdzuy, K., Struve, W., Tripp, R., Weller, J. M., and Whittington, H. B. 1959. Systematic descriptions, p. 170–540. In Moore, R. C. (ed.), Treatise on Invertebrate Paleontology, Part O, Arthropoda 1. Geological Society of America and University of Kansas Press, Lawrence.Google Scholar
Hawle, I., and Corda, A. J. C. 1847. Prodrom einer Monographie der Böhmischen Trilobiten. Abhandlungen der Königlichen Böhmischen Gesellschaft der Wissenschaften, 5:1–176. (Calve edit.)Google Scholar
Heinrichs, R. 1983. Teil 1. Trilobiten aus dem Unter-Devon der Steinberger Kalklinse in der Lindener Mark bei Gießen (E-Rand des Rheinischen Schiefergebirges). Unpublished Masters thesis, University of Bonn, 66 p.Google Scholar
Hollard, H. 1963. Un tableau stratigraphique du Dévonien du Sud de l'Anti-Atlas. Notes et Mémoires (Notes du Service de Mines et de la Carte géologique du Maroc), 23:131–138.Google Scholar
Holloway, D. J., and Lane, P. D. 1998. Effaced Styginid trilobites from the Silurian of New South Wales. Palaeontology, 41:853–896.Google Scholar
Holloway, D. J., and Lane, P. D. 1999. A replacement name for the trilobite Lalax Holloway and Lane non Hamilton. Palaeontology, 42:375.Google Scholar
Jansen, U. 1998. Anmerkungen zur Devon-Korrelationstabelle, B122di97, R120di97: Brachiopoden-Stratigraphie und Formationen in der Dra-Ebene (südlicher Anti-Atlas, Marokko). Senckenbergiana lethaea, 77:269–272.Google Scholar
Kim, I. S. 1997. Trilobiten aus dem Greifensteiner Kalk (Grenzbereich Unter-Mittel-Devon). Palaeontographica, Abteilung A, 245:157–205.Google Scholar
Lane, P. D., and Thomas, A. T. 1980. A replacement name for Rhax Lane and Thomas, 1978 (Trilobita) non Hermann, 1804. Geological Magazine, 117:191.Google Scholar
Maksimova, S. A. 1968. Devonskije Skutelluidy sowetskoi Arktiki i nekotoryje woprosy filogenii smeistwa Scutelluidae. Jeshegodnik wsesojuznowo paleontologicheskogo Obschestwa, 18:148–169.Google Scholar
Maksimova, S. A. 1975. Trilobiti, p. 119–133. In Menner, I. (ed.), Karakteristika fauny pogranicnych sloev silura i devona zentralnogo Kasachstan (The characteristic Fauna of the boundary layers of the Silurian and Devonian of Central Kazakhstan). Materials for the geology of central Kazakhstan, 12.Google Scholar
Matte, P. 2001. The Variscan collage and orogeny (480–290 Ma) and the tectonic definition of the Armorica microplate: a review. Terra Nova, 13:122–128.Google Scholar
McKerrow, W. S., Niocaill, C. Mac, Ahlberg, P. E., Clayton, G., Cleal, C. J., and Eagar, R. M. C. 2000. The Late Palaeozoic relations between Gondwana and Laurussia, p. 9–20. In Franke, W., Haak, V., Oncken, O., and Tanner, D. (eds.), Orogenic Processes: Quantification and Modelling in the Variscan Belt. Geological Society London Special Publication, 179.Google Scholar
Miller, J. 1975. Structure and function of trilobite terrace lines. Fossils and Strata, 4:155–178.Google Scholar
Morzadec, P. 2001. Les Trilobites Asteropyginae du Dévonien de l'Anti-Atlas (Maroc). Palaeontographica, Abteilung A, 262:53–85.Google Scholar
Novák, O. 1890. Vergleichende Studien an einigen Trilobiten aus dem Hercyn von Bicken, Wildungen, Greifenstein und Böhmen. Paläontologische Abhandlungen, neue Folge, 1:1–46.Google Scholar
Oehlert, M. D., and Davoust, P. 1879. Sur le Dévonien du Département de la Sarthe. Bulletin de la Société géologique de France, 7:697–717.Google Scholar
Oehlert, M. D., and Oehlert, P. 1890. Sur le Dévonien des environs d'Angers. Bulletin de la Société géologique de France, 17:742–791.Google Scholar
Osmólska, H. 1957. Trilobites from the Couvinian of Wydryszów (Holy Cross Mts., Poland). Acta Palaeontologica Polonica, 2:53–80.Google Scholar
Pek, I., and Vaněk, J. 1989. Index of Bohemian trilobites. Krajské vlastivedné muzeum Olomouc, p. 1–68.Google Scholar
Pillet, J. 1972. Les trilobites du Dévonien inférieur et du Dévonien moyen du Sud-Est du Massif armoricain. Société d'Études Scientifiques de l'Anjou Mémoire, 1:1–307.Google Scholar
Plodowski, G., Becker, G., Brocke, R., Jansen, U., Lazreq, N., Schindler, E., Schraut, G., Walliser, O. H., Weddige, K., and Ziegler, W. 1999. The section at Jebel Issimour (NW Maider, Early to early Middle Devonian). First results with respect to lithology and biostratigraphy. SDS—IGCP 421 Morocco Meeting, Excursion Guidebook Part I. Tafilalt and Maider (eastern Anti Atlas) [Elhassani, eds. A. and Tahiri, A.], p. 45–53.Google Scholar
Prantl, F., and Přibyl, A. 1947. Klasifikace a rozdělení rodu Scutellum Pusch, 1833 z českého paleozoika. Třidy České akademie, Rozpravy II, ročník LVI, (9): 1–29.Google Scholar
Přibyl, A., and Vaněk, J. 1971. Studie über die Familie Scutelluidae Richter et Richter (Trilobita) und ihre phylogenetische Entwicklung. Acta Universitatis Carolinae—Geologica, 4:361–394.Google Scholar
Pusch, G. G. 1833. Geognostische Beschreibung von Polen, sowie der übrigen Nordkarpathenländer, 1:1–338. Stuttgart, Tübingen.Google Scholar
Richter, R., and Richter, E. 1955. Scutelluidae n.n. (Tril.). Senckenbergiana lethaea, 36:291–293.Google Scholar
Richter, R., and Richter, E. 1956. Grundlagen für die Beurteilung und Einteilung der Scutelluidae (Tril.). Senckenbergiana lethaea, 37:79–124.Google Scholar
Roemer, F. A. 1855. Beitraege zur geologischen Kenntnis des nordwestlichen Harzgebirges (Abt. 3). Palaeontographica, 5:1–46.Google Scholar
Schmalfuss, H. 1981. Structure, patterns and function of cuticular terraces in trilobites. Lethaia, 14:331–341.Google Scholar
Schraut, G. 2000. Trilobiten aus dem Unter-Devon des südöstlichen Anti-Atlas, Süd-Marokko. Senckenbergiana lethaea, 79:361–433.Google Scholar
Scotese, C. R., and McKerrow, W. S. 1990. Revised World maps and introduction, p. 1–21. In McKerrow, W. S. and Scotese, C. R. (eds.), Palaeozoic Palaeogeography and Biogeography. The Geological Society Memoir, 12.Google Scholar
Šnajdr, M. 1958. Několik nových rodů trilonitů z čeledě Scutelluidae. Věstník ŬŬG, roč. 33:177–182.Google Scholar
Šnajdr, M. 1960. Studie o celedi Scutelluidae (Trilobitae). Rozpravy Ústredního Ústavu Geologickeho, 26:1–263.Google Scholar
Šnajdr, M. 1986. Trilobitové rody Microscutellum Šnajdr, Paralejurus Hawle et Corda a Metascutellum Šnajdr z Barrandienského spodního Devonu (Styginidae). Časopis Národního Muzea—řada přírodovedná, 155:125–135.Google Scholar
Stitt, J. H. 1976. Functional morphology and life habits of the Late Cambrian trilobite Stenopilus pronus Raymond. Journal of Paleontology, 50:561–576.Google Scholar
Tait, J., Schätz, M., Bachtadse, V., and Soffel, H. 2000. Palaeomagnetism and Palaeozoic palaeogeography of Gondwana and European terranes, p. 21–34. In Franke, W., Haak, V., Oncken, O., and Tanner, D. (eds.), Orogenic Processes: Quantification and Modelling in the Variscan Belt. Geological Society of London Special Publication, 179.Google Scholar
Vogdes, A. W. 1890. A bibliography of Paleozoic Crustacea from 1698 to 1889, including a list of North American species and a systematic arrangement of genera. Bulletin of the United States Geological Survey, 63:1–177.Google Scholar
Volborth, A. V. 1863. Über die mit glatten Rumpfgliedern versehenen russischen Trilobiten, nebst einem Anhange über die Bewegungsorgane und über das Herz derselben. Mémoires de l'Académie Impériale des Sciences de St.-Petersbourg. VIIe série, 6(2):1–47.Google Scholar
Whittington, H. B. 1997. Illaenidae (Trilobita): Morphology of thorax, classification, and mode of life. Journal of Paleontology, 71:878–896.Google Scholar
Whittington, H. B. 1999. Siluro-Devonian Scutelluinae (Trilobita) from the Czech Republic: Morphology and classification. Journal of Paleontology, 73:414–430.Google Scholar
Ziegler, W., and Klapper, G. 1985. Stages of the Devonian System. Episodes, 8:104–109.Google Scholar