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TaxNo: 6828Genus Nehdenites
Suborder: Tornoceratina
Superfamily: Dimeroceratoidea
Family: Cheiloceratidae
Genus: Nehdenites
Qualifier: gy
Author: Korn 2002,p.460
Valid: Cheiloceras (Compactoceras) TAX757
Lower Boundary: UD2A--UD2B:(verneuili Zone base) [07,75], 374 million years
Upper Boundary: UD2H--UD2I:(mamilliferum base) [12,90], 370 million years