Rhynchonellata - Terebratulida - Notothyrididae

Alternative combination: Cryptacanthia robusta

Belongs to Glossothyropsis according to G. A. Cooper and R. E. Grant 1976

Sister taxa: Glossothyropsis carinata, Glossothyropsis cryptacanthoides, Glossothyropsis immatura, Glossothyropsis juvenis, Glossothyropsis magna, Glossothyropsis polita, Glossothyropsis rectangulata, Glossothyropsis sinuata, Glossothyropsis superba

Type specimen: USNM 118906a, a shell (Articulated shell)

Ecology: stationary epifaunal suspension feeder

Average measurements (in mm): shell 10.5 x 10.7