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TaxNo: 1379Agoniatites crassus
Suborder: Agoniatitina
Superfamily: Agoniatitoidea
Family: Agoniatitidae
Genus: Agoniatites
Species: crassus
Qualifier: sy
Author: Holzapfel 1895,p.64
Valid: Agoniatites costulatus (Arch. & V. 1842)
Lower Boundary: ensensis--hemiansatus Zone [08,20], 391.8 million years
Upper Boundary: mid.--up.varcus Zone [17,00], 389 million years