Suborder:
|
Tornoceratina
|
Superfamily:
|
Prionoceratoidea
|
Family:
|
Prionoceratidae
|
Subfamily:
|
Prionoceratinae
|
Genus:
|
Paragattendorfia?
|
Species:
|
sp. |
Qualifier:
|
of |
Author:
|
Gordon 1965,p.170
|
Lower Boundary:
|
UAR Walls Ferry Fm. base, 356 million years
|
Upper Boundary:
|
UAR Walls Ferry Fm. top, 353 million years
|