TaxNo: 4571Aktubites trifidus+
| Suborder: |
Goniatitina
|
| Superfamily: |
Shumarditoidea
|
| Family: |
Parashumarditidae
|
| Genus: |
Aktubites
|
| Species: | trifidus+ |
| Qualifier: | ss |
| Author: |
Ruzhencev 1955,p.1109
|
| Lower Boundary: |
U Atokan--Desmoinesian [ATO--DES], 308.6 million years
|
| Upper Boundary: |
Moscovian--Kasimovian [MOS--KAS], 306.5 million years
|