Suborder:
|
Tornoceratina
|
Superfamily:
|
Pseudohaloritoidea
|
Family:
|
Pseudohaloritidae
|
Subfamily:
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Shouchangoceratinae
|
Genus:
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Shangraoceras
|
Species:
|
sp. |
Qualifier:
|
in |
Author:
|
div. authors
|
Lower Boundary:
|
CN South Chihsia--Maokou, 268 million years
|
Upper Boundary:
|
CN South Maokou top--Wuchiapingian base, 260.4 million years
|