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TaxNo: 2224Tumulites varians+
Suborder: Goniatitina
Superfamily: Dimorphoceratoidea
Family: Girtyoceratidae
Subfamily: Girtyoceratinae
Genus: Tumulites
Species: varians+
Qualifier: ss
Author: McCaleb et al. 1964,p.3
Lower Boundary: UAR basal--lower shale of Fayetteville, 327 million years
Upper Boundary: UAR upper Fayetteville--lower Pitkin, 324.3 million years