TaxNo: 5756Genus Triainoceras
| Suborder: |
Anarcestina
|
| Superfamily: |
Triainoceratoidea
|
| Family: |
Triainoceratidae
|
| Genus: | Triainoceras |
| Qualifier: | gy |
| Author: |
Hyatt 1884,p.336
|
| Valid: |
Sandbergeroceras Hyatt,1884,p.333 TAX5754 |
| Lower Boundary: |
mid.--up.varcus Zone [17,00], 389 million years
|
| Upper Boundary: |
Givetian--Frasnian [GIV--FRS], 385.3 million years
|