Suborder:
|
Goniatitina
|
Superfamily:
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Gonioloboceratoidea
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Family:
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Wiedeyoceratidae
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Genus:
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Pennoceras
|
Species:
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bennisoni |
Qualifier:
|
ss |
Author:
|
Work et al. 2007,p.595
|
Lower Boundary:
|
U Desmoinesian--Missourian [DES--MIS], 306.5 million years
|
Upper Boundary:
|
UOK Coffeyville Fm. top, 305.9 million years
|