Rhynchonellata - Spiriferida - Trigonotretidae

Full reference: N. W. Archbold and G. A. Thomas. 1985. New genera of Western Australian Permian Spiriferidae (Brachiopoda). Alcheringa 9:269-292

Belongs to Cratispirifer according to N. W. Archbold and G. A. Thomas 1985

Sister taxon: Cratispirifer barchatovae

Type specimen: CPC 24319, a shell (Articulated shell). Its type locality is BMR W34B, Mt. Wynne, Paradise Homestead, which is in a Sakmarian coastal sandstone in the Poole Formation of Australia.

Ecology: stationary epifaunal suspension feeder

Average measurements (in mm): shell 61.4 x 77.7, valve 48.1 x 88.1