| Suborder: |
Goniatitina
|
| Superfamily: |
Gastrioceratoidea
|
| Family: |
Gastrioceratidae
|
| Genus: |
Cancelloceras
|
| Subgenus: |
Cancelloceras
|
| Species: | zhoungweiense |
| Qualifier: | ss |
| Author: |
Yang 1987
|
| Lower Boundary: |
GBY R2b--R2c1(metabiling.--superbiling.), 314.2 million years
|
| Upper Boundary: |
RUS Nm2c2 top;Biling./Canc.--Bran./Gast., 313 million years
|
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