Suborder:
|
Anarcestina
|
Superfamily:
|
Triainoceratoidea
|
Family:
|
Triainoceratidae
|
Genus:
|
Sandbergeroceras
|
Species:
|
sandbergerorum |
Qualifier:
|
sy |
Author:
|
Miller 1938,p.122
|
Valid:
|
Sandbergeroceras tuberculosocostatum |
Lower Boundary:
|
Givetian--Frasnian [GIV--FRS], 385.3 million years
|
Upper Boundary:
|
UD1L--UD2A:(frechi Zone base) [06,10], 374.5 million years
|