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TaxNo: 5697Subgenus Eucheiloceras
Suborder: Tornoceratina
Superfamily: Dimeroceratoidea
Family: Cheiloceratidae
Genus: Cheiloceras
Subgenus: Eucheiloceras
Qualifier: gy
Author: Schmidt 1921,p.323
Valid: Cheiloceras (Cheiloceras) Frech,1897
Lower Boundary: UD2A--UD2B:(verneuili Zone base) [07,75], 374 million years
Upper Boundary: UD2H--UD2I:(mamilliferum base) [12,90], 370 million years