Rhynchonellata - Spiriferida - Trigonotretidae

Alternative combinations: Neospirifer (Quadrospira) postplicatus, Neospirifer postplicatus

Full reference: N. W. Archbold and G. A. Thomas. 1986. Neospirifer and Trigonotreta (Spiriferida, Brachiopoda) from the Permian of Western Australia. Alcheringa 10:125-161

Belongs to Quadrospira according to A. Williams et al. 2007

Sister taxa: Neospirifer (Quadrospira) woolagensis, Quadrospira hardmani, Quadrospira plicatus, Quadrospira preplicatus, Quadrospira tibetensis

Type specimen: CPC24351, a shell (Articulated specimen). Its type locality is BMR KNF73, Bruten's Old Yard, Cherrabun Station, which is in an Artinskian open shallow subtidal limestone in the Noonkanbah Formation of Australia.

Average measurements (in mm): shell 13.5 x 16.9, valve 51.5 x 82.0