Osteichthyes - Aistopoda - Phlegethontiidae
Alternative spelling: Phlegetontiidae
Synonyms: Dolichosomatidae Lydekker 1889, Dolichosomidae Lydekker 1889
Full reference: E. D. Cope. 1875. Synopsis of the Extinct Batrachia from the Coal Measures. Report of the Geological Survey of Ohio 2:349-411
Parent taxon: Aistopoda according to J. S. Anderson 2002
See also Carroll 1988, Carroll et al. 1998, Cope 1875, Cope 1875, Gregory 1948, Hay 1902, Kuhn 1946, Lund 1978, Lydekker 1889, McGinnis 1967 and Thayer 1985
Sister taxa: Lethiscidae, Oestocephalidae, Ophiderpetontidae, Pseudophlegethontiidae
Subtaxa: Dolichosoma Phlegethontia Sillerpeton
Distribution:
• Permian of United States (4: New Mexico, Oklahoma, Texas collections)
• Carboniferous to Permian of United States (1: New Mexico)
• Carboniferous of the Czech Republic (1), France (1), Ireland (1), United States (3: Arizona, Illinois, Ohio)
Total: 11 collections including 16 occurrences