Suborder:
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Tornoceratina
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Superfamily:
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Tornoceratoidea
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Family:
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Posttornoceratidae
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Subfamily:
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Posttornoceratinae
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Genus:
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Posttornoceras
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Species:
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sp. |
Qualifier:
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in |
Author:
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div. authors
|
Lower Boundary:
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UD4C--UD5A:serpent.--Cl.laevigata[16,75], 365.6 million years
|
Upper Boundary:
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UD5B--UD5C:ornata--P.piriformis [17,50], 364.4 million years
|