Trilobita - Proetida - Bathyuridae
Parent taxon: Bathyuridae according to R. A. Fortey and D. L. Bruton 2013
See also Hupé 1953
Sister taxa: Acidiphorus, Aponileus, Bathyurinae, Bathyurus, Eleutherocentrus, Ermanella, Gignopeltis, Gladiatoria, Madaraspis, Psephosthenaspis, Pseudoolenoides, Raymondites, Strigigenalis
Subtaxa: Bathyurellus Benthamaspis Ceratopeltis Chapmania Chapmanopyge Grinnellaspis Harlandaspis Licnocephala Lutesvillia Punka Uromystrum
Ecology: fast-moving low-level epifaunal deposit feeder
Distribution:
• Whiterockian of Canada (16: Newfoundland and Labrador, Quebec collections), Norway (1), United States (19: Nevada, New York, Oklahoma, Utah)
• Chazyan of Canada (1: Newfoundland and Labrador), United States (2: New York)
• Arenigian of United States (5: Nevada, Utah)
• Arenig of Argentina (1), Canada (3: Newfoundland and Labrador), Greenland (7), United States (3: New York, North Dakota, Vermont)
• Ordovician of Canada (45: Alberta, Newfoundland, Newfoundland and Labrador, Nunavut), Greenland (9), Ireland (1), Norway (6), the Russian Federation (6), the United Kingdom (1), United States (182: Idaho, Missouri, Montana, Nevada, Oklahoma, Texas, Utah)
• Tremadoc of Canada (4: Alberta)
• Skullrockian of Canada (1: Newfoundland)
• Ibexian of Canada (1: Quebec), United States (2: Nevada, New York)
Total: 316 collections including 501 occurrences