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TaxNo: 6226Subfamily Ammonellipsitinae
Suborder: Goniatitina
Superfamily: Pericycloidea
Family: Pericyclidae
Subfamily: Ammonellipsitinae
Qualifier: fs
Author: Riley 1996,p.69
Lower Boundary: mid.Tournais.--up.Tournaisian [Tn2--Tn3], 353 million years
Upper Boundary: Chadian--Arundian [V1a--V1b] [CHD--ARU], 344.5 million years