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Paleontological Journal

, Volume 46, Issue 12, pp 1362–1374 | Cite as

Formation of cardinal process in Ordovician strophomenids

  • A. A. Madison
Article

Abstract

The cardinalia of strophomenids Lynnica fragilis gen. et sp. nov. and Sowerbyella (Sowerbyella) liliifera Öpik, 1930 from the Ordovician of the Leningrad Region are described in detail for different developmental stages. The study has revealed that the cardinal process of S. liliifera is bilobed unifid and the cardinal process of L. fragilis is bilobed trifid. L. fragilis gen. et sp. nov. is described.

Keywords

strophomenids ontogeny Ordovician Leningrad Region 

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References

  1. Andreev, D.A., New Ordovian Plectambonitaceans (Brachiopoda) from Tuva and the Leningrad Region, Paleontol. Zh., 1993, no. 2, pp. 50–55.Google Scholar
  2. Cocks, L.R.M. and Rong Jia-yu, Classification and Review of the Brachiopod Superfamily Plectambonitacea, Bull. Brit. Mus. (Nat. Hist.) Geol., 1989, vol. 45, pp. 77–163.Google Scholar
  3. Cocks, L.R.M. and Rong Jia-yu, Order Strophomenida, in Treatise on Invertebrate Paleontology, Part H, Brachiopoda (Revised), Kaesler, R.L., Ed., Boulder (Co)-Lawrence (Ks), Geol. Soc. Am.-Univ. Kansas Press, 2000, vol. 2, pp. 216–349.Google Scholar
  4. Madison, A.A., New Brachiopod Subfamily Anechophragminae (Strophomenida) from the Ordovician of the Leningrad Region, Paleontol. J., 2013, vol. 47, no. 1, pp. 24–37.Google Scholar
  5. Rong Jia-yu and Cocks, L.R.M., True Strophomena and a Revision of the Classification and Evolution of Strophomenoid and “Strophodontoid” Brachiopods, Palaeontology, 1994, vol. 37, part 3, pp. 651–694.Google Scholar
  6. Russian and International Bryozoan Conference “Bryozoa of the World”, A Field Excursion Guide, Dronov, A.V., Ed., St. Petersburg: Terra Nostra, 1997.Google Scholar
  7. Sarycheva, T.G., Glossary of Terms Used in Morphology of Productids (Brachiopoda), in Nastavleniya po sboru i izucheniyu iskopaemykh organicheskikh ostatkov. XI (Guide to Collection and Study of Fossil Organic Remains), Moscow: Nauka, vol. 11, 1970.Google Scholar
  8. Williams, A. and Brunton, C.H.C., Morphological and Anatomical Terms Applied to Brachiopods, in Treatise on Invertebrate Paleontology, Part H, Brachiopoda (Revised), Kaesler, R.L., Ed., Boulder (Co)-Lawrence (Ks), Geol. Soc. Am.-Univ. Kansas Press, 1997, vol. 1, pp. 423–440.Google Scholar
  9. Williams, A., Brunton, C.H.C., and MacKinnon, D.I., Morphology, in Treatise on Invertebrate Paleontology, Part H, Brachiopoda (Revised), Kaesler, R.L., Ed., Boulder (Co)-Lawrence (Ks), Geol. Soc. Am.-Univ. Kansas Press, 1997, vol. 1, pp. 321–422.Google Scholar

Copyright information

© Pleiades Publishing, Ltd. 2012

Authors and Affiliations

  1. 1.Borissiak Paleontological InstituteRussian Academy of SciencesMoscowRussia

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