†family Yukoniidae Zhang 1980 (artiopod)
Artiopoda - Agnostida - Yukoniidae
Parent taxon: Eodiscida according to J. M. Adrain 2011
See also Whittington et al. 1997
Sister taxa: Calodiscidae, Eodiscidae, Hebediscidae, Pagetiidae, Tsunyidiscidae, Weymouthiidae
Subtaxa: Alaskadiscus Egyngolia Ekwipagetia Hebediscina Lenadiscus Yukonia Yukonides
Ecology: slow-moving epifaunal detritivore
Distribution:
• Cambrian of Australia (4 collections), Canada (7: Northwest Territories, Yukon), China (1), Greenland (5), Italy (2), Kazakhstan (3), United States (4: Alaska, New York)
Total: 26 collections including 30 occurrences