Home
Help
Print...
TaxNo: 5591Family Parashumarditidae
Suborder: Goniatitina
Superfamily: Shumarditoidea
Family: Parashumarditidae
Qualifier: fa
Author: Boardman et al. 1994,p.55
Lower Boundary: U Atokan--Desmoinesian [ATO--DES], 308.6 million years
Upper Boundary: Gzhelian--Asselian [C--P], 299 million years