Home
Help
Print...
TaxNo: 5233Genus Properrinites
Suborder: Goniatitina
Superfamily: Shumarditoidea
Family: Perrinitidae
Genus: Properrinites
Qualifier: ge
Author: Elias 1938,p.102
Lower Boundary: UTX Admiral Fm. base, 299 million years
Upper Boundary: UTX Upper Hueco Lst. top, 270.6 million years