Trilobita - Phacopida - Calymenidae
Full reference: D. J. Siveter. 1977. The Middle Ordovician of the Oslo Region, Norway, 27. Trilobites of the Family Calymenidae. Norsk Geologisk Tidsskrift 56:335-396
Parent taxon: Calymenidae according to D. J. Siveter 1977
Sister taxa: Calymenesum, Calymeninae, Carmoninae, Gravicalymene, Linguocalymene, Liocalymene, Neseuretus, Nipponocalymene, Onnicalymene, Papillicalymene, Pharostomatinae, Platycalymene, Pradoella, Protocalymene, Reacalymene, Reedocalymene, Reedocalymeninae, Salterocoryphe, Spathacalymene, Tapinocalymene
Subtaxa: Flexicalymene Metacalymene Sthenarocalymene Thelecalymene
Ecology: nektobenthic carnivore
Distribution:
• Devonian of Australia (2 collections)
• Silurian of Argentina (3), Australia (3), China (1), the Czech Republic (3), Ukraine (2), United States (3: New York)
• Uhaku of Norway (1)
• Ordovician to Silurian of Canada (1: New Brunswick)
• Ordovician of Australia (1), Canada (29: Newfoundland, Nunavut, Ontario, Quebec, Québec), China (2), the Czech Republic (6), Ireland (13), Morocco (5), Norway (38), Spain (1), Sweden (9), the United Kingdom (108), United States (559: Georgia, Illinois, Iowa, Indiana, Iowa, Kentucky, Maryland, Michigan, Minnesota, Missouri, Nevada, New York, Ohio, Pennsylvania and Virginia, Tennessee, Virginia), Venezuela (1)
Total: 791 collections including 809 occurrences