Rostroconchia - Ribeirioida - Ribeiriidae
Full reference: T. Kobayashi. 1933. Faunal study of the Wanwanian (basal Ordovician) series with special notes on the Ribeiridae and the Ellesmereoceroids. Journal of the Faculty of Science Imperial University of Tokyo Section II Geology, Mineralogy, Geography, Seismology 3(7):249-328
Parent taxon: Ribeirioidea according to P. J. Wagner 1997
See also Kobayashi 1933
Sister taxa: Jinonicella, Rhytiodentalium
Subtaxa: Apoptopegma Cymatopegma Oepikila Pinnocaris Ptychopegma Ribeirina Wanwania
Ecology: stationary semi-infaunal suspension feeder
Distribution:
• Silurian of China (2 collections)
• Ordovician of Australia (8), Canada (1: Ontario), South Korea (1), the United Kingdom (3), United States (1: Iowa)
• Taoyuanian of China (1)
• Cambrian of Antarctica (2), Australia (32)
Total: 51 collections including 58 occurrences