Suborder:
|
Tornoceratina
|
Superfamily:
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Prionoceratoidea
|
Family:
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Pseudarietitidae |
Qualifier:
|
fa |
Author:
|
Bartzsch & Weyer 1987,p.61
|
Lower Boundary:
|
Acut.prorsum--A.acutum/G.subinvoluta, 359.2 million years
|
Upper Boundary:
|
Hastarian--Ivorian [HAS--IVO], 353 million years
|