Alternative combination: Ptychites kolymensis
See also Bychkov et al. 1976
Sister taxon: Aristoptychites gerardi
Type specimen: TsNIGR 88/5302
Average measurements (in mm): shell diameter 54.3
Total: 4 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.