Suborder:
|
Goniatitina
|
Superfamily:
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Goniatitoidea
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Family:
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Agathiceratidae
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Genus:
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Gaetanoceras
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Species:
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dronovi |
Qualifier:
|
ss |
Author:
|
Pavlov 1967,p.73
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Lower Boundary:
|
Kochusu Fm., upper, lower--middel part, 268.9 million years
|
Upper Boundary:
|
TAP Kochusu Fm.--Shindyi Fm., 268 million years
|