Suborder:
|
Goniatitina
|
Superfamily:
|
Schistoceratoidea
|
Family:
|
Schistoceratidae
|
Genus:
|
Paralegoceras
|
Species:
|
pacificum |
Qualifier:
|
sy |
Author:
|
Thomas 1928
|
Valid:
|
Paralegoceras peruvianum (Berry 1928) |
Lower Boundary:
|
U Halian--Bloydian, Brentwood base, 313 million years
|
Upper Boundary:
|
UTX Smithwick Fm. top, 308.6 million years
|