Rhynchonellata - Spiriferinida - Spiriferellinidae

Alternative combination: Spiriferellina adunctata

Synonym: Spiriferellina yunnanensis Fang 1983

Full reference: J. B. Waterhouse and S. Piyasin. 1970. Mid-Permian brachiopods from Khao Phrik, Thailand. Palaeontographica Abteilung A 135(3-6):83-197

Belongs to Spiriferellina according to S. Z. Shen et al. 2002

Sister taxa: Spiriferellina aequiplicata, Spiriferellina altiplecusformis, Spiriferellina anguliplica, Spiriferellina baywullensis, Spiriferellina bilotensis, Spiriferellina cambodgiensis, Spiriferellina cristata, Spiriferellina discoformis, Spiriferellina disparata, Spiriferellina elegantula, Spiriferellina enteleteformis, Spiriferellina hilli, Spiriferellina hochuanensis, Spiriferellina lacunosa, Spiriferellina lata, Spiriferellina nasuta, Spiriferellina nasuta, Spiriferellina neerkolensis, Spiriferellina netschajewi, Spiriferellina nuda, Spiriferellina orientalis, Spiriferellina paucicostata, Spiriferellina pauciplicata, Spiriferellina pokrowskensis, Spiriferellina quadriplicata, Spiriferellina quantula, Spiriferellina rouxi, Spiriferellina tareica, Spiriferellina tricosa, Spiriferellina triquetra, Spiriferellina vercherei, Spiriferellina vescula, Spiriferellina yanagidai, Spiriferellina zewanensis

Type specimens:

• Spiriferellina aduncata: University of Toronto B453, a valve (Ventral valve). Its type locality is Khao Phrik, Rat Buri, which is in a Roadian offshore shelf limestone/limestone in the Rat Buri Formation of Thailand.
• Spiriferellina yunnanensis:

Ecology: stationary low-level epifaunal suspension feeder

Average measurements (in mm): shell 5.80 x 7.91, valve 5.27 x 7.67