ammonites
Septocyclothyris markamensis Xu 1978 (lamp shell)

Rhynchonellata - Rhynchonellida - Cyclothyrididae

Full reference: G. R. Xu. 1978. Triassic Brachiopoda. Palaeontological Atlas of Southwest China - Sichuan Volume 2:267-314

Belongs to Septocyclothyris according to G. R. Xu 1978

Sister taxa: none

Type specimen: Its type locality is Xuzhongdage, Markam County, which is in an Alaunian marine horizon in the Bolila Formation of China

Ecology: stationary epifaunal suspension feeder

Average measurements (in mm): shell 15.6 x 17.8, valve 12.4 x 14.6