Suborder:
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Tornoceratina
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Superfamily:
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Prionoceratoidea
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Family:
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Prionoceratidae
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Subfamily:
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Acutimitoceratinae
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Genus:
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Nicimitoceras
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Species:
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trochiforme aff. |
Qualifier:
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af |
Author:
|
Becker & Weyer 2004,p.18
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Lower Boundary:
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DER Ps. westfalicus--Paragattend. patens, 358 million years
|
Upper Boundary:
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low.Tournais.--mid.Tournais. [Tn1--Tn2], 357.5 million years
|