Parent taxon: Olenellina according to J. M. Adrain 2011
See also Bushuev et al. 2014, Geyer 1996, Lieberman 2002, McMenamin 2001 and Palmer and Repina 1993
Sister taxa: Judomioidea, Nevadioidea, Olenelloidea, Poletaevella, Campropallus
Subtaxa: Archaeaspididae Fallotaspididae Judomiidae Neltneriidae Nevadiidae
Ecology: fast-moving low-level epifaunal deposit feeder
Distribution:
• Cambrian of Canada (34: Alberta, British Columbia, Northern Territories, Northwest Territories, Yukon collections), Greenland (5), Mexico (4), Mongolia (2), Morocco (32), the Russian Federation (12), Spain (1), United States (37: California, Nevada, Washington)
• Begadean of United States (3: Nevada)
• Waucoban of United States (3: Nevada, Washington)
Total: 133 collections including 201 occurrences