Oestocephalus Temporal range: Carboniferous

Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Clade:	Sarcopterygii
Clade:	Tetrapodomorpha
Order:	†Aistopoda
Family:	†Oestocephalidae
Genus:	†Oestocephalus Cope, 1868
Species
O. amphiuminus Cope, 1868 (type) O. nanum Hancock & Atthey, 1868

Oestocephalus is an extinct genus of aïstopod Stegocephalian that lived during the Carboniferous period. Fossils have been found in the Czech Republic, and in Ohio and Illinois in the United States. It is the type genus of the family Oestocephalidae, although it used to be assigned to the family Ophiderpetontidae, which is now considered paraphyletic.^[1] It was named by Edward Drinker Cope in 1868 and now contains two species, O. amphiuminus and O. nanum.

References

^ Anderson, J. S. (2003). Cranial anatomy of Coloraderpeton brilli, postcranial anatomy of Oestocephalus amphiuminus, and reconsideration of Ophiderpentontidae (Tetrapoda: Lepospondyli: Aistopoda). Journal of Vertebrate Paleontology 23(3):532-543.

see Gnathostomata
Tetrapodomorpha	see below↓

†Bogdanovia †Chrysolepis †Geptolepis †Glyptopomus †Gogonasus †Greiserolepis †Gyroptychius †Harajicadectes †Kenichthys †Litoptychus †Lamprotolepis †Latvius †Medoevia †Megadonichthys †Muranjilepis †Osteolepis †Peregrina †Platyethmoidia †Shirolepis †Thaumatolepis †Thursius †Tungsenia †Viluichthys
†Rhizodontida	Archichthys Aztecia Barameda Gooloogongia Hongyu? Letognathus Propycnoctenion Pycnoctenion Rhizodus Rossichthys Sauripterus Screbinodus Strepsodus Thysanolepis? Vorobjevaia?
†Canowindridae	Beelarongia Canowindra Koharalepis Marsdenichthys? Owensia?
†Megalichthyidae	Askerichthys Cladarosymblema Cryptolepis? Ectosteorhachis Lohsania? Mahalalepis Megalichthys Megapomus? Megistolepis? Palatinichthys Rhizodopsis Sengoerichthys Sterropterygion?

†Elpistostege †Qikiqtania †Rubrognathus †Tiktaalik
†Panderichthyidae	Howittichthys? Livoniana? Panderichthys Parapanderichthys
Stegocephali?	includes Tetrapoda see below↓