Parent taxon: Phacopina according to J. M. Adrain 2011
Sister taxa: Acastoidea, Diaphanometopidae, Phacopoidea, Prosopiscidae
Subtaxa: Dalmanitidae
Type: Dalmanitidae
Ecology: fast-moving low-level epifaunal carnivore
Distribution:
• Devonian of Algeria (3 collections), Australia (6), Bolivia (4), Brazil (6), Canada (8: New Brunswick, Ontario, Quebec), China (2), Colombia (2), the Czech Republic (12), France (1), Germany (4), Kazakhstan (1), Morocco (14), South Africa (4), Spain (2), United States (37: Alaska, Indiana, Michigan, Nevada, New York, Ohio, Oklahoma, Tennessee)
• Silurian to Devonian of Algeria (1), Argentina (1), Australia (1), United States (1: Oklahoma)
• Silurian of Algeria (1), Argentina (8), Australia (8), Belarus (1), Bolivia (2), Canada (18: Nova Scotia, Ontario, Quebec, Québec), China (7), the Czech Republic (2), Ireland (1), Latvia (3), Mexico (2), Paraguay (1), the Russian Federation (1), Sweden (3), Ukraine (4), the United Kingdom (48), United States (122: Alaska, Arkansas, Georgia, Illinois, Indiana, Iowa, Maine, Maryland, Missouri, New York, Oklahoma, Tennessee, Virginia, West Virginia, Wisconsin)
• Ordovician of Argentina (4), Australia (1), Canada (8: Quebec, Québec), China (40), the Czech Republic (35), Estonia (12), France (45), Iran (6), Italy (1), Kazakhstan (4), Latvia (23), Malaysia (2), Morocco (31), New Zealand (1), Norway (5), Oman (1), Portugal (16), the Russian Federation (1), South Africa (1), Spain (41), Sweden (8), Thailand (1), Turkey (6), the United Kingdom (29), United States (7: Illinois, Maine, Virginia)
• Llandeilo of France (3), Spain (17), the United Kingdom (1)
• Klabava of the Czech Republic (2)
• Arenig of China (1), France (1), the United Kingdom (2)
Total: 698 collections including 933 occurrences