Rostroconchia - Ribeirioida - Ribeiriidae

Full reference: J.-t. Xu. 1990. New materials of Telychian (Llandovery, Silurian) rostroconchs from South China. Acta Palaeontologica Sinica 29(5):592-600

Belongs to Pinnocaris according to P. J. Wagner 2011

Sister taxa: Pinnocaris americana, Pinnocaris curvata, Pinnocaris lapworthi, Pinnocaris robusta, Pinnocaris wellsi

Ecology: stationary semi-infaunal suspension feeder