TaxNo: 4313Shouchangoceras americanum
| Suborder: |
Tornoceratina
|
| Superfamily: |
Pseudohaloritoidea
|
| Family: |
Pseudohaloritidae
|
| Subfamily: |
Shouchangoceratinae
|
| Genus: |
Shouchangoceras
|
| Species: | americanum |
| Qualifier: | ss |
| Author: |
Frest et al. 1981,p.33
|
| Lower Boundary: |
Wordian--Capitanian (Midian) [WOR--CAP], 265.8 million years
|
| Upper Boundary: |
lower Capitanian--upper Capitanian, 263 million years
|