ammonites
Lazarevonia arcuata Waterhouse 1978 (lamp shell)

Strophomenata - Productida - Productellidae

Alternative combination: Krotovia arcuata

Full reference: J. B. Waterhouse. 1978. Permian Brachiopoda and Mollusca from north-west Nepal. Palaeontographica Abteilung A 160(1-6):1-175

Belongs to Lazarevonia according to J. B. Waterhouse 2001

Sister taxa: none

Type specimen: UQF 68815. Its type locality is W1390, Section 22, Pija Village, Karnali, which is in a Changhsingian marine shale/limestone in the Senja Formation of Nepal.

Ecology: stationary low-level epifaunal suspension feeder

Average measurements (in mm): valve 15.0 x 17.9