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: Ribeirioida according to P. J. Wagner 1997
Sister taxa: Ischyrinioidea, Technophoridae
Subtaxa: Jinonicella Rhytiodentalium Ribeiriidae
Ecology: stationary semi-infaunal suspension feeder
Distribution:
• Silurian of China (2 collections), Sweden (1), United States (2: Alaska, Utah)
• Ordovician of Australia (8), Canada (1: Ontario), South Korea (1), the United Kingdom (3), United States (2: Iowa, Kentucky)
• Taoyuanian of China (1)
• Cambrian of Antarctica (2), Australia (32)
Total: 55 collections including 62 occurrences