Suborder:
|
Goniatitina
|
Superfamily:
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Thalassoceratoidea
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Family:
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Bisatoceratidae
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Genus:
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Bisatoceras
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Species:
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kotti |
Qualifier:
|
ss |
Author:
|
Nassichuk 1975,p.102
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Lower Boundary:
|
Langsettian--Duckmantian, Westphal.A--B, 311.3 million years
|
Upper Boundary:
|
U Atokan--Desmoinesian [ATO--DES], 308.6 million years
|