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Madison, 2012

Formation of Cardinal Process in Ordovician Strophomenids

Madison, A. A.
DOI
DOI10.1134/S0031030112120039
Year2012
JournalPaleontological Journal
Volume46
Number12
Pages1362-1374
Typearticle in journal
LanguageEnglish
Id3253

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.

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