Suborder:
|
Anarcestina
|
Superfamily:
|
Beloceratoidea
|
Family:
|
Beloceratidae
|
Genus:
|
Beloceras |
Qualifier:
|
ge |
Author:
|
Hyatt 1884,p.333
|
Lower Boundary:
|
DER do one beta base, 378.7 million years
|
Upper Boundary:
|
UD1L--UD2A:(frechi Zone base) [06,10], 374.5 million years
|