TaxNo: 5550Bisatoceras akiyoshiense
| Suborder: |
Goniatitina
|
| Superfamily: |
Thalassoceratoidea
|
| Family: |
Bisatoceratidae
|
| Genus: |
Bisatoceras
|
| Species: | akiyoshiense |
| Qualifier: | ss |
| Author: |
Nishida 1971,p.6
|
| Lower Boundary: |
Langsettian--Duckmantian, Westphal.A--B, 311.3 million years
|
| Upper Boundary: |
UAR Lower--Upper Atoka Fm., 309.2 million years
|