| Suborder: |
Tornoceratina
|
| Superfamily: |
Karagandoceratoidea
|
| Family: |
Karagandoceratidae
|
| Genus: |
Masonoceras
|
| Species: | sp. |
| Qualifier: | in |
| Author: |
div. authors
|
| Lower Boundary: |
AUN Namoi Formation base, 353 million years
|
| Upper Boundary: |
AUN Dangarfield Formation base, 350 million years
|
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