Conodonta - Ozarkodinida - Spathognathodontodae
Parent taxon: Ozarkodinida according to C. Corradini and M. G. Corriga 2010
Sister taxa: Anchignathodontidae, Elictognathidae, Ellisoniidae, Gamachignathus, Gondolellidae, Gondolellidea, Gondolelloidea, Idiognathodontidae, Kockelellidae, Microzarkodina, Ozarkodinina, Palmatolepididae, Periodon, Plectodina, Pterospathodontidae, Spathognathodontidae, Vjalovognathidae
Subtaxa: Wurmiella
Ecology: nektonic carnivore
Distribution:
• Devonian to Triassic of Greece (1 collection)
• Devonian of Australia (28), Austria (75), Czechia (42), Greece (2), Italy (33), Mongolia (1), Morocco (5), Spain (1), Thailand (1), United States (38: Alaska, Nevada)
• Jaani of Estonia (1)
• Niagaran of Canada (2: Québec)
• Silurian to Devonian of Italy (1), Thailand (1)
• Silurian of Argentina (1), Australia (55), Austria (44), Canada (42: British Columbia, Cornwallis Island, Manitoba, Northwest Territories, Nunavut, Ontario, Québec, Yukon Territory), China (2), Czechia (47), Estonia (89), Germany (10), Greece (3), Greenland (22), Ireland (1), Italy (58), Lithuania (57), Morocco (1), Poland (35), the Russian Federation (7), Spain (1), Sweden (233), Ukraine (10), the United Kingdom (165), United States (155: Illinois, Iowa, Kentucky, Missouri, New York, Ohio, Oklahoma, Texas, Utah, West Virginia, Wisconsin), Uzbekistan (2), Western Sahara (1)
• Ordovician to Silurian of Canada (1: Nunavut)
• Ordovician of Greenland (6)
Total: 1280 collections including 1354 occurrences