Trilobita - Phacopida - Calymenidae
Parent taxon: Calymenidae according to J. M. Adrain and G. D. Edgecombe 1997
See also Adrain et al. 1995
Sister taxa: Calymenesum, Flexicalymeninae, Gravicalymene, Linguocalymene, Liocalymene, Neseuretus, Nipponocalymene, Onnicalymene, Papillicalymene, Pharostomatinae, Platycalymene, Pradoella, Protocalymene, Reacalymene, Reedocalymene, Reedocalymeninae, Salterocoryphe, Spathacalymene, Tapinocalymene
Subtaxa: Alcymene Arcticalymene Atlanticalymene Calymene Diacalymene
Ecology: nektobenthic carnivore
Distribution:
• Devonian of Australia (4 collections), Austria (1), Bolivia (1), China (1), France (3), Italy (2), Kazakhstan (1), Morocco (3), New Zealand (1), United States (1: Nevada)
• Silurian to Devonian of Argentina (1)
• Silurian of Argentina (6), Belarus (4), Canada (136: Northwest Territories, Nova Scotia, Nunavut, Ontario, Quebec, Québec), China (1), the Czech Republic (10), Estonia (24), Greenland (2), India (1), Ireland (1), Latvia (8), Lithuania (12), Norway (4), Paraguay (2), Poland (5), the Russian Federation (5), Sweden (16), Ukraine (19), the United Kingdom (53), United States (122: Alaska, Arkansas, Georgia, Illinois, Indiana, Iowa, Maryland, New York, Oklahoma, Tennessee, Virginia, West Virginia, Wisconsin)
• Niagaran of United States (1: Indiana)
• Ordovician to Silurian of Norway (1)
• Ordovician of Canada (28: Newfoundland, Nunavut, Ontario, Quebec, Québec), China (3), France (2), Norway (1), Sweden (1), the United Kingdom (2), United States (7: Indiana, Michigan, Minnesota, Tennessee, Virginia)
• Llandeilo of China (1)
Total: 497 collections including 567 occurrences