H.  Trautschold, ?Le Néocomien de Sably en Crimée?, Trudy Imperatorskogo St. Petersburgskago Obshchestva Estestvoispytateley, vol. 15, pp. 119?129, 1886.

N. I.  Karakash, ?Lower Cretaceous fauna of the Crimea?, Trudy Imperatorskogo St. Petersburgskago Obshchestva Estestvoispytateley, vol. 32, pp. 1?484, pl. 1?28, 1907.