TaxNo: 5578Genus Shuangyangites
| Suborder: |
Goniatitina
|
| Superfamily: |
Shumarditoidea
|
| Family: |
Perrinitidae
|
| Genus: | Shuangyangites |
| Qualifier: | gy |
| Author: |
Liang 1982,p.650
|
| Valid: | Metaperrinites Ruzhentsev 1950,p.166 |
| Lower Boundary: |
Roadian--Wordian (Murgabian) [ROA--WOR], 268 million years
|
| Upper Boundary: |
Wordian--Capitanian (Midian) [WOR--CAP], 265.8 million years
|