TaxNo: 4927Changhsingoceras tenuicostatum
| Suborder: |
Goniatitina
|
| Superfamily: |
Cycloloboidea
|
| Family: |
Cyclolobidae
|
| Subfamily: |
Cyclolobinae
|
| Genus: |
Changhsingoceras
|
| Species: | tenuicostatum |
| Qualifier: | ss |
| Author: |
Guo 1988,p.394
|
| Lower Boundary: |
Pseudotir./Pleuron.--Rotodiscoceras beds, 252 million years
|
| Upper Boundary: |
Rotodiscoceras top, 251.5 million years
|