(ofHelyocryptus kljasmiensis Gerasimov, 1992 †)Gerasimov, P. A. (1992). Jurassic and boundary Cretaceous gastropods of the European part of Russia. <em>Moskva: Nauka.</em> 190 pp., 29 plates [in Russian]. page(s): 40, pl. 6, fig. 4 [details] Available for editors [request]
original description(ofHelyocryptus kljasmiensis Gerasimov, 1992 †)Gerasimov, P. A. (1992). Jurassic and boundary Cretaceous gastropods of the European part of Russia. <em>Moskva: Nauka.</em> 190 pp., 29 plates [in Russian]. page(s): 40, pl. 6, fig. 4 [details] Available for editors [request]
From editor or global species database
Fossil range Middle Jurassic (Callovian stage) [details] Type locality Russia, Moscow Region, Shchelkovo District, the right bank of the Klyazma River, a quarry near Amerevo settlement [details]
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