Suborder:
|
Goniatitina
|
Superfamily:
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Neoicoceratoidea
|
Family:
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Paragastrioceratidae
|
Subfamily:
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Paragastrioceratinae
|
Genus:
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Paragastrioceras
|
Species:
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sp. |
Qualifier:
|
in |
Author:
|
div. authors
|
Lower Boundary:
|
Gzhelian--Asselian [C--P], 299 million years
|
Upper Boundary:
|
Sakmarian--Artinskian [SAK--ART], 284.4 million years
|