Suborder:
|
Anarcestina
|
Superfamily:
|
Beloceratoidea
|
Family:
|
Gephuroceratidae
|
Subfamily:
|
Maternoceratinae |
Qualifier:
|
fy |
Author:
|
Korn & Klug 2002,p.113
|
Valid:
|
Subfam.Gephuroceratinae TAX5764 |
Lower Boundary:
|
DER do one beta base, 378.7 million years
|
Upper Boundary:
|
UD1J--UD1K:paradox.--A.varicosum [04,85], 376.9 million years
|