Rhynchonellata - Terebratulida - Notothyrididae

Alternative combination: Cryptacanthia sinuata

Full reference: F.G. Stehli. 1954. Lower Leonardian Brachiopoda of the Sierra Diablo. Bulletin of the American Museum of Natural History 105(3):257-358

Belongs to Glossothyropsis according to Z. Q. Chen 2004

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

Type specimen: AMNH 27331

Ecology: stationary epifaunal suspension feeder

Average measurements (in mm): shell 7.01 x 7.76