Suborder:
|
Tornoceratina
|
Superfamily:
|
Prionoceratoidea
|
Family:
|
Gattendorfiidae
|
Genus:
|
Zadelsdorfia
|
Species:
|
ohioensis |
Qualifier:
|
ss |
Author:
|
Winchell 1870,p.259
|
Lower Boundary:
|
UOH Logan Fm. base, 357.5 million years
|
Upper Boundary:
|
UOH Logan Fm. top, 353 million years
|