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Upper Wenlock Ceratoikiscidae (Radiolaria) from the Cape Phillips Formation, Arctic Canada

Published online by Cambridge University Press:  14 July 2015

Paula J. Noble  and
Alfred C. Lenz
Paula J. Noble
Affiliation:
Department of Geological Sciences and Engineering, University of Nevada, Reno 89557-0138, USA,
Alfred C. Lenz
Affiliation:
Department of Earth Sciences, University of Western Ontario, London, Ontario, N6A 5B7, Canada,
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Abstract

Taxa belonging to the Ceratoikiscidae are described in detail from two measured sections of Member C of the Cape Phillips Formation exposed along Rookery Creek, Cornwallis Island, Arctic Canada. The sections encompass uppermost Sheinwoodian (top lower Wenlock) to the base of the Gorstian (base Ludlow) and are dated by graptolites assigned to the Cyrtograptus perneri–Monograptus opimus Zone (upper Sheinwoodian), the Cyrtograptus lundgreni Zone (lower Homerian), and the Colonograptus praedeubeli–Colonograptus deubeli Zone (upper Homerian). Radiolarians are found in great abundance throughout the lower Homerian, allowing for the establishment of the first appearance of the genus Helenifore Ormiston and Nazarov. Helenifore is emended to accommodate the Silurian species H. quadrispina n. sp. and H. speciosus (Furutani 1990). One new genus, Kappaforma, including the new species, K. insecta, is described, as is the new species H. quadrispina. Ceratoikiscum octapleura Renz and C. armiger Furutani are synonymized with C. lenoides Renz, and H. planus Umeda is synonymized with H. speciosus.

Type
Research Article
Information
Journal of Paleontology , Volume 81 , Issue 5 , September 2007 , pp. 1044 - 1052
Copyright
Copyright © The Paleontological Society 

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References

Aitchison, J. C., Hada, S., and Yoshikura, S. 1991. Kurosegawa terrane: Disrupted remnants of a low latitude Paleozoic terrand accreted to SW Japan. Journal of Southeast Asian Earth Sciences, 6:83–92.Google Scholar
Aitchison, J. C., Hada, S., Ireland, T., and Yoshikura, S. 1996. Ages of Silurian radiolarians from the Kurosegawa Terrane, southwest Japan constrained by U/Pb SHRIMP data. Journal of Southeast Asian Earth Sciences, 14:53–70.Google Scholar
Amon, E. O., Braun, A., and Ivanov, K. S. 1995. Upper Silurian Radiolarians from the Southern Urals. Geologicaa et Palaeontologica, 29:1–17.Google Scholar
Cheng, Y-N. 1986. Taxonomic studies on Upper Paleozoic Radiolaria. National Museum Natural Science, Taiwan, Special Publication no. 1, 311 p.Google Scholar
Deflandre, G. 1953. Radiolaires fossiles, p. 389–436. In Grassé, P. P. (ed.), Traité de Zoologie-Anatomie, Systématique, Biologie.tome I, fascicule II. Masson et Companie, Paris.Google Scholar
Furutani, H. 1990. Middle Paleozoic Radiolarians from Fukuji Area, Gifu Prefecture, Central Japan. Journal of Earth Sciences, Nagoya University, 37:1–56.Google Scholar
Goodbody, Q. H. 1982. Silurian Radiolaria from the Cape Phillips Formation, Canadian Arctic Archipelago. Proceedings of the Third North American Paleontological Convention, 1:211–216.Google Scholar
Goodbody, Q. H. 1986. Wenlock Palaeoscenidiidae and Entactiniidae (Radiolaria) from the Cape Phillips Formation of the Canadian Arctic Archipelago. Micropaleontology, 32:129–157.CrossRefGoogle Scholar
Holdsworth, B. K. 1969a. Namurian Radiolaria of the genus Ceratoikiscum from Staffordshire and Derbyshire, England. Micropaleontology, 15:221–229.Google Scholar
Holdsworth, B. K. 1969b. The relationship between the genus Albaillella Deflandre and the ceratiokiscid Radiolaria. Micropaleontology, 15:230–236.Google Scholar
Holdsworth, B. K. 1977. Paleozoic Radiolaria: Stratigraphic distribution in Atlantic borderlands, p. 167–184. In Swain, F. M. (ed.), Stratigraphic Micropaleontology of Atlantic Basin and Borderlands. Elsevier, Amsterdam.Google Scholar
Lenz, A. C. 1995. Upper Homerian (Wenlock, Silurian) graptolites and graptolite biostratigraphy, Arctic Archipelago, Canada. Canadian Journal of Earth Sciences, 32:1378–1392.Google Scholar
Lenz, A. C. and Kozłowska-Dawidziuk, A. 2001. Upper Wenlock (Silurian) graptolites of Arctic Canada: Pre-Extinction lundgreni Biozone fauna. Palaeontographica Canadiana, No. 20, 61 p.Google Scholar
MacDonald, E. W. 1998. Llandovery Secuicollactinae and Rotasphaeridae (Radiolaria) from the Cape Phillips Formation, Cornwallis Island, Arctic Canada. Journal of Paleontology, 72:585–604.Google Scholar
MacDonald, E. W. 1999. Insolitignum n. gen. and Palaeoephippium Goodbody 1986 (Radiolaria) from the Lower Silurian of the Cape Phillips Formation, Arctic Canada. Canadian Journal of Earth Science, 36:2051–2057.CrossRefGoogle Scholar
MacDonald, E. W. 2003. Radiolaria from the Lower Silurian of the Cape Phillips Formation, Cornwallis Island, Nunavut, Canada. Ph.D. dissertation, Dalhousie University, Halifax, Nova Scotia, 370 p.Google Scholar
Melchin, M. J. 1989. Llandovery graptolite biostratigraphy and paleobiogeography, Cape Phillips Formation, Canadian Arctic Islands. Canadian Journal of Earth Sciences, 26:1726–1746.Google Scholar
Nazarov, B. B. 1988. Radiolyarii Paleozoya. Prakticheskoe Rukovodstvo po Mikrofaune S.S.S.R., 2, Nedra, Leningrad, 232 p.Google Scholar
Nazarov, B. B. and Ormiston, A. R. 1983. Upper Devonian (Frasnian) radiolarian fauna from the Gogo Formation, Western Australia. Micropaleontology, 29(4):454–466.Google Scholar
Nazarov, B. B. and Ormiston, A. R. 1986. Trends in development of Paleozoic Radiolaria. Marine Micropaleontology, 11:3–32.Google Scholar
Nazarov, B. B. and Ormiston, A. R. 1993. New biostratigraphically important Paleozoic Radiolaria of Eurasia and North America, p. 22–60. In Blueford, J. R. and Murchey, B. L. (eds.), Radiolaria of giant and subgiant fields in Asia. Micropaleontology Special Publication, no. 6.Google Scholar
Renz, G. W. 1988. Silurian Radiolaria of the genus Ceratoikiscum from the Canadian Arctic. Micropaleontology, 34:260–267.CrossRefGoogle Scholar
Stratford, J. M. C. and Aitchison, J. C. 1997. Lower to Middle radiolarian assemblages from the Gamilaroi terrane, Glenrock Station, NSW, Australia. Marine Micropaleontology, 30:225–250.Google Scholar
Umeda, M. 1997. Late Silurian and Early Devonian radiolarians from the Konomori area in the Kurosegawa Terrane, Southwest Japan. Earth Science, 51:413–432.Google Scholar
Umeda, M. 1998. Upper Silurian–Middle Devonian radiolarian zones of the Yokokurayama and Konomori areas in the Kurosegawa Belt, Southwest Japan. The Island Arc, 7:637–646.Google Scholar
Wakamatsu, H., Sugiyama, K., and Furutani, H. 1990. Silurian and Devonian Radiolarians from the Kurosegawa Tectonic Zone, Southwest Japan. Journal of Earth Sciences, Nagoya University, 37:157–192.Google Scholar