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TaxNo: 1619Gyroceratites dorsolamellatus armoricanus
Suborder: Agoniatitina
Superfamily: Mimoceratoidea
Family: Mimoceratidae
Genus: Gyroceratites
NomSpecies: dorsolamellatus
Species: armoricanus
Qualifier: ss
Author: Erben 1960,p.85
Lower Boundary: LD3C--LD3D: Anetoceras Range Zone top, 405.5 million years
Upper Boundary: Gyroceratites gracilis RZ base [13,80], 404 million years