Suborder:
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Goniatitina
|
Superfamily:
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Dimorphoceratoidea
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Family:
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Berkhoceratidae
|
Genus:
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Kazakhoceras
|
Species:
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sp. |
Qualifier:
|
in |
Author:
|
div. authors
|
Lower Boundary:
|
DER Go beta falcatus--Go beta gracilis, 329.1 million years
|
Upper Boundary:
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Arnsbergian--Chokierian [ARN--CHO], 319 million years
|