Suborder:
|
Goniatitina
|
Superfamily:
|
Schistoceratoidea
|
Family:
|
Aqishanoceratidae |
Qualifier:
|
fy |
Author:
|
Wang 1981,p.472
|
Valid:
|
Welleritidae Plummer & Scott TAX5197 |
Lower Boundary:
|
RUS Nm2b3--Nm2c1,Bilinguites-Cancelloc.G, 314.8 million years
|
Upper Boundary:
|
UOK Wewoka Fm. top, 307.1 million years
|