Suborder:
|
Goniatitina
|
Superfamily:
|
Schistoceratoidea
|
Family:
|
Melvilloceratidae |
Qualifier:
|
fy |
Author:
|
Nassichuk 1975,p.133
|
Valid:
|
Reticuloceratidae (Surenitinae)* |
Lower Boundary:
|
U Halian--Bloydian, Brentwood base, 313 million years
|
Upper Boundary:
|
U Atokan--Desmoinesian [ATO--DES], 308.6 million years
|