TaxNo: 6427Bisatoceras secundum aff.
| Suborder: |
Goniatitina
|
| Superfamily: |
Thalassoceratoidea
|
| Family: |
Bisatoceratidae
|
| Genus: |
Bisatoceras
|
| Species: | secundum aff. |
| Qualifier: | af |
| Author: |
Nishida & Kyuma 1982,p.38
|
| Lower Boundary: |
U Halian--Bloydian, Brentwood base, 313 million years
|
| Upper Boundary: |
UAR Brentwood Lst.--Woolsey, 312.5 million years
|