Suborder:
|
Goniatitina
|
Superfamily:
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Goniatitoidea
|
Family:
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Agathiceratidae
|
Genus:
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Agathiceras
|
Species:
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sp. |
Qualifier:
|
in |
Author:
|
div. authors
|
Lower Boundary:
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Sakmarian--Artinskian [SAK--ART], 284.4 million years
|
Upper Boundary:
|
Kungurian/Leonardian--Roadian [KUN--ROA], 270.6 million years
|