TaxNo: 6000Promarathonites maclai
| Suborder: |
Goniatitina
|
| Superfamily: |
Marathonitoidea
|
| Family: |
Marathonitidae
|
| Genus: |
Promarathonites
|
| Species: | maclai |
| Qualifier: | ss |
| Author: |
Popov 1992,p.59
|
| Lower Boundary: |
Kasimovian--Gzhelian [KAS--GZE], 303.9 million years
|
| Upper Boundary: |
RUS lower--upper Gzhelian, 301 million years
|