ammonites
Pararigbyella quadrilobata Shen and Zhang 2008 (lamp shell)

Strophomenata - Productida - Lyttoniidae

Full reference: S. Z. Shen and Y. C. Zhang. 2008. Earliest Wuchiapingian (Lopingian, Late Permian) brachiopods in southern Hunan, south China: implications for the pre-Lopingian crisis and onset of Lopingian recovery/radiation. Journal of Paleontology 82(5):924-937

Belongs to Pararigbyella according to S. Z. Shen and Y. C. Zhang 2008

Sister taxon: Pararigbyella doulingensis

Type specimen: NIGP 130771, a valve (Ventral valve, internal mold). Its type locality is Yansha Section, Jiahe Area, which is in a Wuchiapingian marine siliciclastic in the Douling Formation of China.

Ecology: stationary low-level epifaunal suspension feeder