Paleontological Journal

, Volume 47, Issue 1, pp 23–35 | Cite as

New brachiopod subfamily Anechophragmiinae (Strophomenida) from the Ordovician of the Leningrad Region

  • A. A. MadisonEmail author


A new strophomenid subfamily Anechophragmiidae is distinguished based on the peculiarities of cardinalia. The strophomenids of this subfamily lack cardinal process at all developmental stages; their socket ridges accrete and form a high plate, which closes the pedicle opening. Two genera are referred to the subfamily: Anechophragma Neuman, 1976 and Biseptata gen. nov. with new species B. briani sp. nov. from the Ordovician of the Leningrad Region. The shell structure, exterior, endoskeleton and ontogeny of A. rarum and B. briani were studied in detail due to the excellent preservation of the material. Two species are referred to Anechophragma: A. rarum Neuman, 1976 and A. alexandrae (Andreev, 1993).


Strophomenida Ordovician Leningrad Region 


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. Andreev, D.A., New Ordovician 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, vol. 2. Part H. Brachiopoda (Revised), Vol. 2, Kaesler, R.L., Ed., Boulder (Co)-Lawrence (Ks): Geol. Soc. Am.-Univ. Kansas Press, 2000, pp. 216–299.Google Scholar
  4. Egerquist, E., Revision of the Ordovician Plectambonitoid Brachiopod Ujukella Andreev and Related Genera, GFF, 1999, vol. 121, pp. 325–332.CrossRefGoogle Scholar
  5. Hansen, J. and Harper, D.A.T., Brachiopod Microfaunal Distribution through the Upper Volkhov-Lower Kunda (Lower Ordovician) Rocks, Lynna River, St. Petersburg Region, Bull. Geol. Soc. Denmark, 2003, vol. 50, pp. 45–53.Google Scholar
  6. Jaanusson, V., Two Plectambonitacean Brachiopods from the Dalby Limestone (Ordov.) of Sweden, Bull. Geol. Inst. Univ. Uppsala, 1962, vol. 39, no. 10, pp. 1–9.Google Scholar
  7. Kutorga, S., Über das silurische und devonische Schichten-System von Gatschina, Verh. der Russ. Kais. Min. Gesellsch. zu St. Petersb., Jahre 1845–1846, St. Petersburg: Carl Kray, 1846, pp. 85–139.Google Scholar
  8. Madison, A.A., Formation of Cardinal Process in Ordovician Strophomenids, Paleontol. J., 2012, vol. 46, no. 12, pp. 1370–1382.CrossRefGoogle Scholar
  9. Neuman, R.B., Early Ordovician (Late Arenig) Brachiopods from Virgin Arm, New World Island, Newfoundland, Geol. Surv. Can. Bull., 1976, no. 261, pp. 11–61.Google Scholar
  10. 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, pp. 651–694.Google Scholar
  11. Rubel, M., New Species of the Brachiopod Family Dalmanellidae from the Llandovery of Estonia, Tr. Inst. Geol. Akad. Nauk ESSR, 1961, vol. 13, pp. 173–186.Google Scholar
  12. Russian and International Bryozoan Conference “Bryozoa of the World,” A Field Excursion Guide, Dronov, A.V., Ed., St. Petersburg: Terra Nostra, 1997.Google Scholar

Copyright information

© Pleiades Publishing, Ltd. 2013

Authors and Affiliations

  1. 1.Borissiak Paleontological InstituteRussian Academy of SciencesMoscowRussia

Personalised recommendations