Suborder:
|
Goniatitina
|
Superfamily:
|
Shumarditoidea
|
Family:
|
Perrinitidae
|
Genus:
|
Metaperrinites
|
Species:
|
nevadensis |
Qualifier:
|
sy |
Author:
|
Miller et al. 1957,p.1060
|
Valid:
|
Metaperrinites subcumminsi (Haniel 1915 |
Lower Boundary:
|
Sakmarian--Artinskian [SAK--ART], 284.4 million years
|
Upper Boundary:
|
Kungurian/Leonardian--Roadian [KUN--ROA], 270.6 million years
|