Suborder:
|
Tornoceratina
|
Superfamily:
|
Pseudohaloritoidea
|
Family:
|
Shouchangoceratidae |
Qualifier:
|
fy |
Author:
|
Zhao & Zheng 1977,p.225
|
Valid:
|
Shouchangoceratinae Zhao & Zheng TAX5174 |
Lower Boundary:
|
RUS lower--upper Zhigulian, 305.9 million years
|
Upper Boundary:
|
Permian--Triassic (Induan base), 251 million years
|