Mazaev A.V. (2016). A new species of the genus Medfracaulus from the Upper Carboniferous of the Moscow Basin; Morphology and taxonomy and the family Ptychocaulidae (Gastropoda). Paleontologicheskii Zhurnal. 2016(3): 14-20.
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Mazaev A.V.
2016
A new species of the genus <i>Medfracaulus</i> from the Upper Carboniferous of the Moscow Basin; Morphology and taxonomy and the family Ptychocaulidae (Gastropoda)