†family Holmiidae Hupé 1953 (trilobite)
Trilobita - Redlichiida - Holmiidae
Parent taxon: Olenelloidea according to J. M. Adrain 2011
See also Ebbestad et al. 2003, Lieberman 1999, Palmer and Repina 1993 and Whittington et al. 1997
Sister taxa: Biceratopsidae, Laudoniidae, Olenellidae, Wanneriidae
Subtaxa: Andalusiana Callaviinae Cambropallas Elliptocephalus Esmeraldina Grandinasus Holmia Holmiella Holmiinae Iyouella Montezumaspis Palmettaspis
Ecology: fast-moving low-level epifaunal deposit feeder
Distribution:
• Cambrian of Canada (7: Northwest Territories collections), Morocco (4), Norway (6), Poland (2), Sweden (1), United States (90: California, Nevada, Pennsylvania, Vermont)
Total: 110 collections including 159 occurrences