Suborder:
|
Goniatitina
|
Superfamily:
|
Gastrioceratoidea
|
Family:
|
Glaphyritidae
|
Subfamily:
|
Glaphyritinae
|
Genus:
|
Syngastrioceras
|
Species:
|
guangxiense |
Qualifier:
|
sy |
Author:
|
Ruan 1981,p.192
|
Valid:
|
Syngastrioceras ruani Kullmann TAX6377 |
Lower Boundary:
|
CNG Qixu 15--16, 313 million years
|
Upper Boundary:
|
CNG Qixu 16 top, 309.5 million years
|