†Otarozoum Thomas and Holloway 1991 (trilobite)
Parent taxon: Lichida according to J. J. Sepkoski 2002
Sister taxa: Akantharges, Brutonia, Ceratolichas, Craspedarges, Damesellidae, Eifliarges, Gaspelichas, Hopolichoides, Jasperia, Leiolichas, Lichakephalidae, Lichakephalina, Lichidae, Lyralichas, Metaleiolichas, Nipponarges, Nonix, Odontopleuridae, Odontopleuroidea, Paraleolichas, Rontrippia, Tsunylichas, Uripes
Subtaxa: none
Ecology: fast-moving low-level epifaunal carnivore