Suborder:
|
Goniatitina
|
Superfamily:
|
Gastrioceratoidea
|
Family:
|
Glaphyritidae
|
Subfamily:
|
Fayettevilleinae
|
Genus:
|
Parafayettevillea |
Qualifier:
|
gy |
Author:
|
Yang 1986,p.267
|
Valid:
|
Fayettevillea Gordon, 1960 [TAX4842 ] |
Lower Boundary:
|
DER E2a--E2b, 322.5 million years
|
Upper Boundary:
|
Arnsbergian--Chokierian [ARN--CHO], 319 million years
|