TaxNo: 5769Genus Chaoceras
| Suborder: |
Anarcestina
|
| Superfamily: |
Beloceratoidea
|
| Family: |
Beloceratidae
|
| Genus: | Chaoceras |
| Qualifier: | gy |
| Author: |
Yatskov 1990,p.44.
|
| Valid: |
Naplesites Yatskov,1990 [TAX5767] |
| Lower Boundary: |
Givetian--Frasnian [GIV--FRS], 385.3 million years
|
| Upper Boundary: |
UD1L--UD2A:(frechi Zone base) [06,10], 374.5 million years
|