Suborder:
|
Goniatitina
|
Superfamily:
|
Neoicoceratoidea
|
Family:
|
Paragastrioceratidae
|
Subfamily:
|
Pseudogastrioceratinae
|
Genus:
|
Pseudogastrioceras
|
Species:
|
gigantum |
Qualifier:
|
ss |
Author:
|
Zhao et al. 1978,p.74
|
Lower Boundary:
|
Anderssonoc./Prototoc.--Araxoc./Kongl., 258 million years
|
Upper Boundary:
|
Araxoc./Konglingites--Sanyangites, 256 million years
|