Parent taxon: Paterinida according to L.E. Holmer et al. 2017
See also Bruton and Harper 2000, Hansen and Holmer 2011, Popov 2000, Skovsted et al. 2017 and Williams et al. 2000
Sister taxon: Paterinacea
Subtaxa: Cryptotretidae Paterinidae
Ecology: stationary epifaunal suspension feeder
Distribution:
• Uhaku of Sweden (1 collection)
• Chazyan of United States (1: Alabama)
• Billingen of the Russian Federation (1)
• Ordovician of China (2), Czechia (2), Kazakhstan (1), Norway (8), the Russian Federation (2), Sweden (3)
• Cambrian of Antarctica (2), Argentina (1), Australia (79), Canada (134: Alberta, Alberta-British Columbia, British Columbia, Labrador, Newfoundland, Newfoundland and Labrador, Northwest Territories, Nova Scotia, Nunavut), China (3), Denmark (4), France (1), Greenland (9), Kazakhstan (16), Kyrgyzstan (1), Mexico (6), Mongolia (1), New Zealand (1), Norway (1), the Russian Federation (7), Spain (6), the United Kingdom (6), United States (85: Arizona, California, Idaho, Montana, Nevada, New York, Pennsylvania, Texas, Utah, Vermont, Virginia, Washington, Wyoming)
• Templetonian of Australia (3)
• Solvan of Australia (1), Sweden (1)
• Amgan of Kazakhstan (6)
• Caerfai of United States (1: Nevada)
• Waucoban of United States (1: Washington)
Total: 397 collections including 447 occurrences