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TaxNo: 6735Girtyoceras brainerdi
Suborder: Goniatitina
Superfamily: Dimorphoceratoidea
Family: Girtyoceratidae
Subfamily: Girtyoceratinae
Genus: Girtyoceras
Species: brainerdi
Qualifier: sy
Author: Morgan 1924,p.31
Valid: Girtyoceras meslerianum Girty [TAX2170)
Lower Boundary: UAR basal--lower shale of Fayetteville, 327 million years
Upper Boundary: UAR upper Fayetteville--lower Pitkin, 324.3 million years