Trilobita - Corynexochida - Dolichometopidae
This has gotten effed up because the eponymous subfamily was entered later, with subsequent opinions elevating it to a family. So, it's now cut off from everything.
Alternative spelling: Dolichometopinae
Full reference: C.D. Walcott. 1916. Cambrian geology and paleontology III. No. 5. Cambrian trilobites. Smithsonian Miscellaneous Collections 64:303-456
Parent taxon: Corynexochida according to G. Geyer 2015
See also Adrain 2011, Eddy and McCollum 1998, Korovnikov and Shabanov 2016, Palmer and Halley 1979, Sundberg 1994, Sundberg and McCollum 2003, Walcott 1916 and Whittington et al. 1997
Sister taxa: Brylyella, Cheilocephalidae, Chondagraulos, Corynexochidacea, Corynexochina, Corynexochoidea, Granularapis, Granularaspidae, Hemibarrandiidae, Hunnanocephalus, Illaenidae, Illaenina, Illaenoidea, Leiostegiina, Phillipsinellidae, Styginidae, Xuigiella
Subtaxa: Amphoton Anoria Athabaskia Athabaskiella Basanellus Bathyuriscidella Bathyuriscus Centonella Chilometopus Clavaspidella Corynexochides Deiradonyx Dolichometopsis Dolichometopus Fuchouia Glossopleura Hemirhodon Hoffetella Klotziella Neopoliellina Parapoliella Poliella Poliellaites Poliellaspis Poliellina Polypleuraspis Ptarmigania Shanghaia Wenkchemnia
Type: Dolichometopsis
Ecology: nektobenthic carnivore
Distribution:
• Amgan of Kazakhstan (1 collection), United States (1: Utah)
• Solvan of Canada (22: British Columbia, Newfoundland and Labrador), United States (3: Nevada)
• Delamaran of Canada (6: Alberta, British Columbia), Mexico (3), United States (67: California, Idaho, Montana, Nevada, Nevada and California, Pennsylvania, Utah)
• Waucoban of Greenland (1)
• Cambrian of Antarctica (5), Argentina (1), Australia (4), Canada (16: Alberta, Alberta-British Columbia, Brithish Columbia, British Columbia, Northwest Territories), China (82), Greenland (12), India (3), Kazakhstan (4), Mexico (1), the Russian Federation (18), Spain (1), United States (61: Alaska, Arizona, California, Idaho, Montana, Nevada, New York, Pennsylvania, Utah, Vermont, Virginia)
Total: 312 collections including 466 occurrences