Geological Time: Carboniferous Pennsylvanian
holotype
View of a specimen of Schwageriniformis schwageriniformis (Rauzer-Chernousova, 1938)
The identification is based upon:
, : Rauzer-Chernousova, D. M. (1938). ?????????????????? ???????????? ????????? ???? ? ???????? - The Upper Paleozoic foraminifera of Samara Bend and the Trans-Volga region. ????? ?????????????? ????????? ?? ???? (?????????) - Proceedings of the Geological Institute of the USSR Academy of Sciences (Leningrad). 7: 69-168. Plate , Fig.