Likharev B.K., Nechaev A.B. (1956). Gastropods of Middle and Upper Carboniferous of Fergana, Part 1. Superfamily Bellerophontacea. Trudy Vsesoyuznogo Nauchno-Issledovatel'skogo Geologicheskogo Instituta (VSEGEI), novaya seriya. 16: 1-74. In Russian.
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Likharev B.K., Nechaev A.B.
1956
Gastropods of Middle and Upper Carboniferous of Fergana, Part 1. Superfamily Bellerophontacea
Trudy Vsesoyuznogo Nauchno-Issledovatel'skogo Geologicheskogo Instituta (VSEGEI), novaya seriya