Rhynchonellata - Orthida - Schizophoriidae

Alternative combinations: Orthis incisiva, Rhipidomella incisiva

Full reference: W. Waagen. 1884. Productus Limestone Fossils, Part IV, fas. 3. Salt Range Fossils, Palaeontologia Indica, Series 13 1(4):547-610

Belongs to Acosarina according to D. Yang et al. 1977

Sister taxa: Acosarina aethopa, Acosarina antesulcata, Acosarina baylorensis, Acosarina circular, Acosarina dorashamensis, Acosarina dunbari, Acosarina fecunda, Acosarina grandis, Acosarina janiceps, Acosarina juresanensis, Acosarina mesoplatys, Acosarina minuta, Acosarina monocosta, Acosarina rectimarginata, Acosarina regularis

Type specimen: Its type locality is Amb, lowest beds of compact Middle Productus-limestone, Salt Range, which is in a Capitanian open shallow subtidal limestone in the Wargal Formation of Pakistan

Ecology: stationary epifaunal suspension feeder

Average measurements (in mm): shell 9.00 x 8.50, valve 11.2 x 10.8