Suborder:
|
Goniatitina
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Superfamily:
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Schistoceratoidea
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Family:
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Schistoceratidae
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Genus:
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Diaboloceras
|
Species:
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varicostatum+* |
Qualifier:
|
ss |
Author:
|
Miller & Furnish 1940,p.527
|
Lower Boundary:
|
U Morrowan (Bloydian)--Atokan[MOR--ATO], 310.4 million years
|
Upper Boundary:
|
UAR Lower--Upper Atoka Fm., 309.2 million years
|