Suborder:
|
Tornoceratina
|
Superfamily:
|
Dimeroceratoidea
|
Family:
|
Dimeroceratidae
|
Subfamily:
|
Dimeroceratinae |
Qualifier:
|
fy |
Author:
|
Hyatt 1884,p.330
|
Valid:
|
Dimeroceratidae Hyatt (TAX 5723) |
Lower Boundary:
|
UD2A--UD2B:(verneuili Zone base) [07,75], 374 million years
|
Upper Boundary:
|
P.delph.--low.Platyclym.annulata IIIb/IV, 367.6 million years
|