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TaxNo: 6208Neoglyphioceras firmum
Suborder: Goniatitina
Superfamily: Neoglyphioceratoidea
Family: Neoglyphioceratidae
Genus: Neoglyphioceras
Species: firmum
Qualifier: ss
Author: Ruan & Zhou 1987,p.109
Lower Boundary: UAR Wedington--Limestone/Fayetteville, 326 million years
Upper Boundary: RUS Nm1b1--Nm1b2 (Domb.carinat.--tectus), 324.6 million years