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TaxNo: 5660Genus Aenigmatoceras
Suborder: Goniatitina
Superfamily: Neoglyphioceratoidea
Family: Cravenoceratidae
Subfamily: Cravenoceratinae
Genus: Aenigmatoceras
Qualifier: ge
Author: Ruzhentsev & Bog. 1978,p.144
Lower Boundary: RUS Nm2b1--Nm2b2(S.krest.--P.alpharhip.), 316.8 million years
Upper Boundary: RUS Nm2b3--Nm2c1,Bilinguites-Cancelloc.G, 314.8 million years