| Suborder: |
Goniatitina
|
| Superfamily: |
Marathonitoidea
|
| Family: |
Marathonitidae
|
| Genus: |
Marathonites
|
| Species: | jpsmithi |
| Qualifier: | ss |
| Author: |
Böse 1919,p.135
|
| Lower Boundary: |
UTX upper-uppermost Gaptank, 300 million years
|
| Upper Boundary: |
UTX Gaptank Fm. top, 299 million years
|
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