Suborder:
|
Goniatitina
|
Superfamily:
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Neoicoceratoidea
|
Family:
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Paragastrioceratidae
|
Subfamily:
|
Atsabitinae |
Qualifier:
|
fs |
Author:
|
Furnish 1966,p.278
|
Lower Boundary:
|
Asselian--Sakmarian [ASS--SAK], 294.6 million years
|
Upper Boundary:
|
Sakmarian--Artinskian [SAK--ART], 284.4 million years
|