Suborder:
|
Goniatitina
|
Superfamily:
|
Pericycloidea
|
Family:
|
Pericyclidae
|
Subfamily:
|
Pericyclinae
|
Genus:
|
Polaricyclus
|
Species:
|
minimus |
Qualifier:
|
ss |
Author:
|
Hind 1910,p.107
|
Lower Boundary:
|
Pericyclus--Fasciperic./Ammonellips.BZ, 348.5 million years
|
Upper Boundary:
|
GBY lower--upper Chadian [CHD], 345.3 million years
|