Rhynchonellata - Spiriferida - Choristitidae

Alternative combination: Semibrachythyrina anshunensis

Synonym: Semibrachythyrina pyramidiformis Liang 1982

Full reference: Z. T. Liao. 1980. Upper Permian brachiopods from western Guizhou. Late Permian Stratigraphy and Fossils in Western Guizhou and Eastern Yunnan 241-277

Belongs to Alphaneospirifer according to M. E. Clapham 2011

Sister taxa: Alphaneospirifer fasciculata, Alphaneospirifer mucronata, Alphaneospirifer ziyunensis, Semibrachythyrina rhombiformis, Semibrachythyrina nanlingensis, Semibrachythyrina mahaensis, Semibrachythyrina subpentagona

Type specimens:

• Alphaneospirifer anshunensis: NIGP 43719. Its type locality is Jiaozishan Section Bed 25 (AJ-43), Anshun County, which is in a Changhsingian carbonate limestone/shale in China.
• Semibrachythyrina pyramidiformis: Its type locality is Lengwu, lower Cunhouling Member, Tonglu, which is in a Capitanian coastal siliciclastic in the Lengwu Formation of China.

Average measurements (in mm): shell 24.5 x 32.9, valve 27.2 x 31.2