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TaxNo: 3426Genus Nautellipsites
Suborder: Goniatitina
Superfamily: Pericycloidea
Family: Muensteroceratidae
Genus: Nautellipsites
Qualifier: gy
Author: Parkinson 1822,p.164
Valid: Muensteroceras vel Beyrichoceras
Lower Boundary: low.Tournais.--mid.Tournais. [Tn1--Tn2], 357.5 million years
Upper Boundary: Up.Visean Goniatites BZ base [up.VIS], 333.5 million years