Suborder:
|
Goniatitina
|
Superfamily:
|
Marathonitoidea
|
Family:
|
Marathonitidae
|
Genus:
|
Marathonites
|
Species:
|
uralensis |
Qualifier:
|
ss |
Author:
|
Ruzhencev 1940,p.89
|
Lower Boundary:
|
RUS Zhigulian--Orenburgian [Ruzhentsev], 305 million years
|
Upper Boundary:
|
Gzhelian--Asselian [C--P], 299 million years
|