|
Suborder:
|
Paraceltitina
|
|
Superfamily:
|
Xenodiscoidea
|
|
Family:
|
Paraceltitidae
|
|
Genus:
|
Doulingoceras |
|
Qualifier:
|
ge |
|
Author:
|
Zhou 1985,p.198
|
|
Lower Boundary:
|
Capitanian--Wuchiapingian [CAP--DZH], 260.4 million years
|
|
Upper Boundary:
|
Wuchiapingian--Changhsingian [DZH--CHX], 253.8 million years
|