Parent taxon: Conodonta according to S. A. Leslie 1997
See also Sweet 1988
Sister taxa: Acodina, Aldridgeodus, Aldridgeognathus, Amphigeisinidae, Ancidontus, Ancyrogondolella, Apteracontiodus, Belodellida, Branmehla, Chengyuania, Coleodontidae, Costiconus, Dasytodus, Diaphanodus, Dischidognathus, Dolborodina, Enantiognathus, Eofalodus, Euconodonta, Euconodonta, Euconodonta, Fahraeosodus, Falcodus, Gagievodus, Gobduntaulepis, Heterdontoides, Hindeodella andrusovi, Iowagnathus, Llandoverygnathus, Lundodus, Minimodus, Nasusgnathus, Noixodontus, Nothognathella, Omanognathus, Oslodus, Ozarkodinida, Palmatodella, Pandorinella, Paraconodontida, Parvigondolella, Pollognathus, Polygnathida, Polyplacognathida, Prioniodontida, Protopanderodontida, Pseudobelodella, Rexroadus, Rhynchognathodus, Rotundoconus, Sagittodontus, Silurognathus, Spathognathodus, Tardogondolella, Tokognathus, Trichonodella, Youngquistognathus, Zygognathus
Subtaxa: Cristodus Loxodus Panderodontidae Thrincodus
Ecology: nektonic carnivore
Distribution:
• Givetian of the Russian Federation (1 collection)
• Devonian of Australia (168), Austria (113), Bulgaria (5), Canada (12: Northwest Territories, Nunavut, Ontario, Yukon, Yukon Territory), France (1), Germany (5), Greece (2), Italy (23), Mongolia (2), Morocco (47), Poland (2), the Russian Federation (11), Spain (2), United States (24: Iowa, Minnesota, Nevada, Texas), Vietnam (1)
• Niagaran of Canada (3: Québec)
• Silurian to Devonian of Australia (73)
• Silurian of Argentina (1), Australia (138), Austria (36), Canada (313: British Columbia, Cape Manning, Cornwallis Island, Manitoba, Northwest Territories, Nunavut, Ontario, Quebec, Québec, Yukon, Yukon Territory), China (2), Czechia (38), Estonia (140), Greece (1), Greenland (188), Ireland (1), Italy (40), Latvia (5), Lithuania (82), Malaysia (3), Mongolia (5), Norway (8), Poland (33), the Russian Federation (22), Sweden (272), Ukraine (5), the United Kingdom (187), United States (540: California, Georgia, Illinois, Indiana, Iowa, Kentucky, Missouri, Nevada, New York, Ohio, Oklahoma, Tennessee, Texas, Utah, Wisconsin)
• Chazyan of United States (1: Tennessee)
• Whiterockian of Canada (4: British Columbia, Northwest Territories), United States (8: Nevada)
• Arenig of Argentina (1), China (3)
• Ordovician to Silurian of Canada (58: Nunavut, Québec), United States (1: California)
• Ordovician to Devonian of Canada (16: Nunavut)
• Ordovician of Argentina (13), Australia (17), Austria (5), Canada (172: British Columbia, Cape Manning, Cornwallis Island, Manitoba, Newfoundland, Northwest Territories, Nunavut, Ontario, Québec), China (56), Estonia (5), Germany (1), Greenland (40), Ireland (1), Italy (1), Kazakhstan (1), Lithuania (1), Malaysia (23), Mongolia (2), New Zealand (4), Poland (14), the Russian Federation (56), South Korea (3), Spain (1), Svalbard and Jan Mayen (5), Sweden (26), Thailand (6), the United Kingdom (2), United States (103: Alaska, Iowa, Minnesota, Missouri, Nevada, New Mexico, New York, Oklahoma, Utah, Wyoming)
• Ibexian of United States (1: New York)
• Cambrian of Canada (1: Nunuvat)
Total: 3207 collections including 5202 occurrences