Suborder:
|
Tornoceratina
|
Superfamily:
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Praeglyphioceratoidea
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Family:
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Sporadoceratidae
|
Genus:
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Nothosporadoceras |
Qualifier:
|
ge |
Author:
|
Bogoslovsky 1971,p.161
|
Lower Boundary:
|
UD2H--UD2I:(mamilliferum base) [12,90], 370 million years
|
Upper Boundary:
|
UD5A--UD5B: ornata Zone base [17,10], 364.8 million years
|