P. orbistoma from Croatia (l) and after Schönborn et al. 1983
Genus Pseudawerintzewia Bonnet, 1959
Diagnosis: Shell oviform; cross-section circular, brown, attached quartz particles. Pseudostome elliptical or round, in flattened center of the broader end, thickened lip, no collar.
Type species: Pseudawerintzewia calcicola Bonnet, 1959.
Four species: P. orbistoma is similar to the type species but with a circular pseudostome.
Habitat: Feeding herbivorous? Usually P. calcicola and P. orbistoma are associated with calcareous soils (Bonnet, 1989).
Pseudawerintzewia calcicola – from Meisterfeld, 2002