TaxNo: 1954Irinoceras latecostatum
| Suborder: |
Tornoceratina
|
| Superfamily: |
Prionoceratoidea
|
| Family: |
Prionoceratidae
|
| Subfamily: |
Prionoceratinae
|
| Genus: |
Irinoceras
|
| Species: | latecostatum |
| Qualifier: | ss |
| Author: |
Nicolaus 1963,p.93
|
| Lower Boundary: |
DER Go alpha 1--Go alpha 2 [11.00], 333 million years
|
| Upper Boundary: |
DER Go alpha 2--Go alpha 3 [11.60], 332.3 million years
|