†family Ottoidae Walcott 1911 (priapulid worm)
Full reference: C. D. Walcott. 1911. Cambrian Geology and Paleontology II: No.5--Middle Cambrian Annelids. Smithsonian Miscellaneous Collections 57(5):109-144
Parent taxon: Archaeopriapulida according to S. Conway Morris 1977
See also Walcott 1911
Sister taxa: Ancalagonidae, Fieldiidae, Lecythioscopa, Miskoidae, Scolecofurca, Selkirkiidae, Singuuriqia
Type: Ottoia
Ecology: facultatively mobile shallow infaunal carnivore
Distribution:
• Ordovician of China (1 collection)
• Solvan of United States (1: Nevada)
• Delamaran of Canada (23: British Columbia)
• Cambrian of Canada (4: British Columbia), China (4), United States (7: Nevada, Pennsylvania, Utah)
Total: 40 collections including 41 occurrences