TaxNo: 5331Family Marathonitidae
| Suborder: |
Goniatitina
|
| Superfamily: |
Marathonitoidea
|
| Family: | Marathonitidae |
| Qualifier: | fa |
| Author: |
Ruzhencev 1938,p.254
|
| Lower Boundary: |
RUS Miachkovian--Zhigulian [MYA--ZHI], 306.5 million years
|
| Upper Boundary: |
RIT Amarassi beds top, 258 million years
|