Artiopoda - Agnostida - Eodiscidae
Parent taxon: Eodiscida according to J. M. Adrain 2011
See also Ahlberg 1983, Landing et al. 2002, Palmer and Halley 1979, Skovsted 2006, Walcott 1916 and Whittington et al. 1997
Sister taxa: Calodiscidae, Hebediscidae, Pagetiidae, Tsunyidiscidae, Weymouthiidae, Yukoniidae
Subtaxa: Dawsonia Eodiscus Helepagetia Kiskinella Macannaia Opsidiscus Pagetia Pagetides Sinopagetia
Ecology: slow-moving epifaunal detritivore
Distribution:
• Silurian of the United Kingdom (1 collection)
• Solvan of Australia (2), Canada (19: Newfoundland and Labrador), the Czech Republic (1), Sweden (1), United States (1: Nevada)
• Amgan of the Czech Republic (1), the Russian Federation (1), United States (1: Alaska)
• Delamaran of Canada (9: British Columbia, New Brunswick), Mexico (1), United States (26: California, California-Nevada, Idaho, Nevada, Nevada and California, Pennsylvania, Utah)
• Caerfai of Italy (3), United States (1: New York)
• Cambrian of Antarctica (3), Argentina (2), Australia (4), Canada (22: Alberta-British Columbia, British Columbia, New Brunswick, Newfoundland, Northwest Territories, Quebec, Yukon), China (56), Greenland (13), India (3), Italy (2), Mexico (1), the Russian Federation (2), Spain (1), Svalbard and Jan Mayen (1), Sweden (2), the United Kingdom (3), United States (15: Alaska, Idaho, Massachusetts, Nevada, Pennsylvania, Utah, Vermont, Virginia)
Total: 198 collections including 225 occurrences