ammonites
Richthofenia guangdeensis Liao 1984 (lamp shell)

Strophomenata - Productida - Richthofeniidae

Full reference: Z. T. Liao. 1984. New genus and species of Late Permian and earliest Triassic brachiopods from Jiangsu, Zhejiang and Anhui provinces. Acta Palaeontologica Sinica 23:276-285

Belongs to Richthofenia according to Z. T. Liao 1984

Sister taxa: Richthofenia anshunensis, Richthofenia caucasica, Richthofenia elegans, Richthofenia lawrenciana, Richthofenia orientalis, Richthofenia sinensis, Richthofenia tilita, Richthofenia ussurica

Type specimen: NIGP 71137. Its type locality is Niutoushan coal mine 7 shaft, Act299, Guangde County, which is in a Wuchiapingian marine siliciclastic in the Longtan Formation of China.

Ecology: stationary low-level epifaunal suspension feeder

Average measurements (in mm): valve 24.7 x 23.2