ammonites
Koeveskallina media Sun and Ye 1982 (lamp shell)

Rhynchonellata - Spiriferinida - Balatonospiridae

Full reference: D. L. Sun and S. L. Ye. 1982. Middle Triassic brachiopods from the Tosu Lake area, central Qinghai. Acta Palaeontologica Sinica 21(2):153-173

Belongs to Koeveskallina according to D. L. Sun and S. L. Ye 1982

Sister taxa: Koeveskallina dalmani, Koeveskallina epichara, Koeveskallina koeveskalyensis, Koeveskallina meridionalis, Koeveskallina paleotypus, Koeveskallina pannonica

Type specimen: NIGPAS 67038, a shell (Articulated shell). Its type locality is Naocangjian Valley 72P1F46-10, Heihai District, Madoi County, which is in an Aegean/Bithynian marine horizon in the Naocangjiangou Formation of China.

Ecology: stationary low-level epifaunal suspension feeder

Average measurements (in mm): shell 11.1 x 12.7