|
Suborder:
|
unrecognized
|
|
Superfamily:
|
unrecognized
|
|
Family:
|
unrecognized
|
|
Genus:
|
Prehoffmannia |
|
Qualifier:
|
gn |
|
Author:
|
Plummer & Scott 1937,p.360
|
|
Valid:
|
unrecognized |
|
Lower Boundary:
|
UTX Graford Fm.--Brad Fm., 305.3 million years
|
|
Upper Boundary:
|
UTX Graham Fm. top, 301 million years
|