ammonites
Pseudomonotis (Aviculomonotis) matthewi Grabau 1931 (clam)

Bivalvia - Pectinida - Pseudomonotidae

Full reference: A. W. Grabau. 1931. The Permian of Mongolia. Natural History of Asia 4:1-665

Belongs to Pseudomonotis (Aviculomonotis) according to A. W. Grabau 1931

Sister taxa: Pseudomonotis (Aviculomonotis) indica, Pseudomonotis (Aviculomonotis) waageni

Type specimen: Its type locality is Jisu Honguer 1196, Hemiptychina Bed, which is in a Wordian carbonate limestone in the Zhesi Formation of China

Ecology: stationary epifaunal suspension feeder

Average measurements (in mm): valve length 26.8