Geological Time: Permian
holotype
View of a specimen of Bidiexodina primaris (Leven & Grabchak, 1986)
The identification is based upon:
, : Leven, E. J.; Grabchak, O. L. (1986). ?? ?????? ? ??????????? ???????????? ??????????????? - About the volume and systematics of the subfamily Polydiexodininae. ???????? ???? ???? ??????? ?????????????????? - Academy of Sciences USSR Questions of Micropaleontology. 28: 24-28. Plate , Fig.