Rhynchonellata - Rhynchonellida - Stenoscismatidae

Alternative combination: Stenoscisma tetricum

Full reference: R. E. Grant. 1976. Permian brachiopods from southern Thailand. Paleontological Society Memoir 9:1-269

Belongs to Liufaia according to J. B. Waterhouse 2004

Sister taxa: none

Type specimen: USNM 212712, a shell (Articulated shell)

Average measurements (in mm): shell 29.9 x 25.4