Hyolithelminthida - Hyolithellidae
Full reference: C. D. Walcott. 1886. Second contribution to the studies on the Cambrian faunas of North America. United States Geological Survey Bulletin 30:1-365
Parent taxon: Hyolithelminthida according to A. Kouchinsky et al. 2017
See also Fisher 1962, Landing et al. 2008, Parkhaev and Demidenko 2010 and Skovsted 2006
Sister taxa: Beklemishevites, Byronia, Ivanovites, Koksuja, Phosphannulus, Thorslundella, Torellellidae, Torellelloides
Subtaxa: Barella Hexagonellus Hyolithellus Pseudorthotheca
Type: Hyolithellus
Ecology: stationary epifaunal suspension feeder
Distribution:
• Amgan of Kyrgyzstan (1 collection)
• Delamaran of Canada (2: British Columbia), United States (1: Virginia)
• Caerfai of United States (1: New York)
• Waucoban of United States (1: Washington)
• Cambrian of Antarctica (1), Australia (33), Canada (19: British Columbia, Labrador, New Brunswick, Newfoundland and Labrador, Northwest Territories, Nova Scotia, Quebec), China (55), France (2), Greenland (40), India (1), Iran (2), Italy (1), Kazakhstan (22), Kyrgyzstan (4), Mexico (5), Mongolia (5), Morocco (3), Poland (1), the Russian Federation (51), Svalbard and Jan Mayen (1), Sweden (11), the United Kingdom (8), United States (20: Nevada, New York, Pennsylvania, Utah, Virginia, Washington)
• Placentian of Canada (2: Nova Scotia), United States (1: Massachusetts)
Total: 294 collections including 387 occurrences