Suborder:
|
Goniatitina
|
Superfamily:
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Gastrioceratoidea
|
Family:
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Gastrioceratidae
|
Genus:
|
Cancelloceras
|
Species:
|
martini |
Qualifier:
|
sy |
Author:
|
Schmidt 1925,p.594
|
Valid:
|
Cancelloceras crencellatum (Bisat 1924) |
Lower Boundary:
|
Marsdenian--Yeadonian [MRD--YEA], 313.8 million years
|
Upper Boundary:
|
Yeadonian--Langsettian, Westph.A [YEA--, 313 million years
|