Suborder:
|
Goniatitina
|
Superfamily:
|
Pericycloidea
|
Family:
|
Pericyclidae
|
Subfamily:
|
Pericyclinae
|
Genus:
|
Goniocyclus
|
Species:
|
pulcher |
Qualifier:
|
sn |
Author:
|
Lisitsyn 1909,p.117
|
Lower Boundary:
|
low.Tournais.--mid.Tournais. [Tn1--Tn2], 357.5 million years
|
Upper Boundary:
|
UMO Hannibal Shale top, 357 million years
|