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TaxNo: 1535Tornoceras? whitfieldi
Suborder: Tornoceratina
Superfamily: Tornoceratoidea
Family: Tornoceratidae
Subfamily: Tornoceratinae
Genus: Tornoceras?
Species: whitfieldi
Qualifier: ss
Author: Miller 1932,p.331
Lower Boundary: Eifel.--Givetian [dm96:08,20] [EIF--GIV], 391.8 million years
Upper Boundary: mid.--up.varcus Zone [17,00], 389 million years