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Edestus
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Superfamily Edestoidea Hay, 1930
Family Edestidae Jaekel, 1899
Genus Edestus Leidy, 1855

Pennsylvanian, Base of the Anna Shale Formation at the Contact with the underlying Herrin #6 Coal Seam of the Carbondale Group (Mazon Creek Fauna) Baldwin Mine, Sparta, Illinois USA



Helicoprion sp.


Superfamily Edestoidea Hay, 1930
Family Agassizodontidae Zangerl, 1981,
Genus Helicoprion Karpinsy, 1899

Permian, Phosphate Mine, Idaho, U.S.A.



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20110901 Fumio Nakagawa

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