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TaxNo: 5215Family Thalassoceratidae
Suborder: Goniatitina
Superfamily: Thalassoceratoidea
Family: Thalassoceratidae
Qualifier: fa
Author: Hyatt 1900,p.553
Lower Boundary: Moscovian--Kasimovian [MOS--KAS], 306.5 million years
Upper Boundary: Asselian--Sakmarian [ASS--SAK], 294.6 million years