Width; 40 cm
Tooth height; 11cm
Helicoprion sp.
Permian, Phosphate Mine, Idaho, U.S.A.
Eugeneodontid
ver. 1.2
Superfamily Edestoidea Hay, 1930
Family Agassizodontidae Zangerl, 1981,Genus Helicoprion Karpinsy, 1899
Width; 40 cm
Tooth height; 11cm
Helicoprion sp.
Permian, Phosphate Mine, Idaho, U.S.A.
Family Edestidae Jaekel, 1899A, Genus Edestus Leidy, 1855A
14.6cm
Edestus heinrich
Pennsylvanian,,Anna Shale Formation, Baldwin Mine, Sparta,
Illinois, U.S.A.
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