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TaxNo: 3998Genus Zhifangoceras
Suborder: Goniatitina
Superfamily: Dimorphoceratoidea
Family: Girtyoceratidae
Subfamily: Sudeticeratinae
Genus: Zhifangoceras
Qualifier: ge
Author: Sheng 1984,p.288
Lower Boundary: mid.Tournais.--up.Tournaisian [Tn2--Tn3], 353 million years
Upper Boundary: DER Go beta--gamma, granos.base [P1--P2], 328.2 million years