Suborder:
|
Tornoceratina
|
Superfamily:
|
Prionoceratoidea
|
Family:
|
Imitoceratidae |
Qualifier:
|
fy |
Author:
|
Ruzhencev 1950,p.87
|
Valid:
|
Prionoceratidae Hyatt,1884 [TAX3764 ] |
Lower Boundary:
|
P.delph.--low.Platyclym.annulata IIIb/IV, 367.6 million years
|
Upper Boundary:
|
UTX Graham Fm. top, 301 million years
|