Suborder:
|
Anarcestina
|
Superfamily:
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Beloceratoidea
|
Family:
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Acanthoclymeniidae
|
Genus:
|
Ponticeras?
|
Species:
|
planorbe aff. |
Qualifier:
|
of |
Author:
|
Clausen 1969,p.155
|
Lower Boundary:
|
UD1I--UD1J:tripart.--N.paradoxum [04,20], 377.5 million years
|
Upper Boundary:
|
UD1K--UD1L:varicos.--C.holzapfeli [05,35, 375.1 million years
|