Parainoceramyan. gen. forParainoceramusCox, 1954 (exVoronetz, 1936)partim(Bivalvia, Jurassic)

Abstract

Several Jurassic pterioid bivalve species have been referred toParainoceramusCox by different authors, yet this has proved inadequate because the meaning of such genus has been compounded by nomenclatural and idiomatic problems, as well as misinterpretations. Hence, the new genusParainoceramyais here proposed to accommodate several species previously referred toParainoceramus, withCrenatula ventricosaJ. de C. Sowerby as its type. Permian species originally assigned toParainoceramus, including the type species, are referred to the genusKolymiaLikharev. All species attributed toParainoceramuss.l. are reviewed and the new genus is compared with related genera. As here understood, the new genus is first recorded in the Hettangian and attained a cosmopolitan distribution; its last occurrence is probably Berriasian.

Well‐developed muscle attachments in British Albian inoceramids (Inoceramidae, Bivalvia): implications for inoceramid palaeobiology, evolution and taxonomy

“…Similar general schemes have been used for proposed Inoceramidae and their ancestors by other researchers (Waterhouse ; Ros‐Franch et al . ). The main divergence from the general view that the Inoceramidae should be placed in the Pteriomorphia was a suggestion that they were part of the Cryptodonta (Johnston & Collom ).…”