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Paleontological Journal
Vol. 50 (3), 2016, Pages: 222–228

A new species of the genus Medfracaulus from the Upper Carboniferous of the Moscow Basin; Morphology and taxonomy and the family Ptychocaulidae (Gastropoda)

A. V. Mazaev

Borissiak Paleontological Institute, Russian Academy of Sciences, Moscow, Russia.

Abstract

The latest representative of the family Ptychocaulidae, Medfracaulus sinelnikovae sp. nov., is described from the Moscovian Stage of the Moscow Basin. Morphology of Ptychocaulidae, their taxonomy and distribution are discussed, and the species composition of the genus Medfracaulus is considered.

Keywords: Gastropoda, Ptychocaulidae, Medfracaulus, Coelocaulus, morphology, systematic, Paleozoic, Carboniferous, Moscow Basin.

 
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