6533b86cfe1ef96bd12c8d41

RESEARCH PRODUCT

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

subject

description

Several Jurassic pterioid bivalve species have been referred to Parainoceramus Cox 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 genus Parainoceramya is here proposed to accommodate several species previously referred to Parainoceramus, with Crenatula ventricosa J. de C. Sowerby as its type. Permian species originally assigned to Parainoceramus, including the type species, are referred to the genus Kolymia Likharev. All species attributed to Parainoceramus s.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. Fil: Ros Franch, Sonia. Universidad de Valencia; España. Universidad Nacional de la Plata. Facultad de Cs.naturales y Museo. Departamento de Paleontologia Invertebrados; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Damborenea, Susana Ester. Universidad Nacional de la Plata. Facultad de Cs.naturales y Museo. Departamento de Paleontologia Invertebrados; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Marquez Aliaga, Ana. Universidad de Valencia; España. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Manceñido, Miguel Oscar. Universidad Nacional de la Plata. Facultad de Cs.naturales y Museo. Departamento de Paleontologia Invertebrados; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina