Alternative spelling: Furcacudiformes
Parent taxon: Thelodonti according to R. van der Laan 2019
See also Long 2011, Nelson et al. 2016, Sepkoski 2002 and Wilson and Caldwell 1998
Sister taxa: Archipelepidiformes, Boreania, Helenolepididae, Loganelliiformes, Longodidae, Oeseliidae, Phlebolepidiformes, Sandiviiformes, Shieliiformes, Thelodontiformes, Valiukia
Subtaxa: Apalolepidae Barlowodidae Drepanolepididae Furcacaudidae Lanarkiidae Nikoliviidae Pezopallichthyidae
Distribution:
• Devonian of Canada (6: Northwest Territories, Nunavut collections), Greenland (1), Norway (5), the Russian Federation (3), Ukraine (9), the United Kingdom (4), United States (3: Nevada)
• Silurian of Canada (5: Northwest Territories, Nunavut), Greenland (1), the United Kingdom (5)
Total: 42 collections including 95 occurrences