Trilobita - Proetida - Tropidocoryphidae
Parent taxon: Proetoidea according to J. C. Lamsdell and P. A. Selden 2015
Sister taxa: Phillipsiidae, Proetidae, Rorringtoniidae, Scharyiidae
Subtaxa: none
Ecology: fast-moving low-level epifaunal deposit feeder
Distribution:
• Daleje of the Czech Republic (1 collection)
• Devonian of Australia (5), Austria (1), Belgium (5), Canada (4: Northwest Territories, Nunavut), China (4), the Czech Republic (28), France (18), Germany (11), Italy (2), Morocco (25), the Russian Federation (1), Spain (3), United States (3: Alaska, New York, Pennsylvania), Uzbekistan (1)
• Silurian of Canada (8: Northwest Territories, Quebec), the Czech Republic (10), Japan (1), United States (2: Arkansas)
• Ordovician of Argentina (8), Canada (1: Quebec), China (2), the Czech Republic (2), the Netherlands (1), Norway (6), Sweden (15), the United Kingdom (1), United States (2: Virginia)
Total: 171 collections including 312 occurrences