Genus: Adamanterpeton MILNER & SEQUEIRA, 1998
Etymology: Greek, adamantas, “diamond," after the Diamond Coal Mine at Linton, and Greek, erpeton, “a creeping animal”: Diamond creeping animal.
Species: ohioensis MILNER & SEQUEIRA, 1998
Etymology: In reference to Ohio, the state where the specimen was found.
= Macrerpeton huxleyi MOODIE, 1916 (partim) non COPE, 1874
= Leptophractus lancifer ROMER (partim) non NEWBERRY, 1856
= Leptophractus obsoletus ROMER (partim) non COPE, 1873
= ‘edopoid temnospondyls’ PANCHEN, 1970
= Gaudrya cf. latistoma HOOK & BAIRD, 1986 non FRITSCH, 1885
= Gaudrya MILNER, 1987 non FRITSCH, 1885
= Linton cochleosaur MILNER & SEQUEIRA, 1994
= Cochleosaurus GODFREY & HOLMES, 1995 non FRITSCH, 1885
= Undescribed cochleosaurid SEQUEIRA, 1996
Holotype: AMNH 2933
Locality: Linton locality (Coal mines originally owned by the Ohio Diamond Coal Company), NE corner Sect. 13, T9N, R2W, Linton near Wellsvile, west bank near mouth of Yellow Creek, Saline Township, Jefferson County, Ohio.
Horizon: Canneloid shale underlying Upper Freeport Coal, Allegheny Group.
Age: Upper Westphalian D, Lower Upper Silesian series, Myachkovskian stage, Upper Moscovian Epoch, Middle Pennsylvanian (Late Carboniferous).
Material: A skull in partial counterpart on two slabs.
AMNH 6954: A skull in partial counterpart on two slabs of coal.
Note: These counterparts were referred to by Moodie (1916) by their Newberry collection numbers 8532G and 8572G, and by Romer (1930) by the completely erroneous numbers AMNH 6939 and AMNN 6951.