Rhynchonellata - Terebratulida - Angustothyrididae

Full reference: B. V. Koczyrkevicz. 1984. Sistematika i novye taksony pozdnepermskikh Terebratulid (Brachiopoda) yuzhnogo Primor'ya. Sistematikha i Evolyutsiya Bespozvonochnykh Dal'nego Vostoka 9-22

Belongs to Praeangustothyris according to B. V. Koczyrkevicz 1984

Sister taxa: none

Type specimen: BPI 706-341, a shell. Its type locality is Sudoverf' Village, Cyrolexis ussuricum beds, Primorye, which is in a Capitanian carbonate limestone in the Chandalaz Formation of the Russian Federation.

Ecology: stationary epifaunal suspension feeder

Average measurements (in mm): shell 5.65 x 3.63