Toggle navigation
MENU
Main Menu
About
User Guide
FAQ
Recent Changes
People
Funding
Project Development
Official Publications
Partner Organizations
Database Policies
Grant Writing Assistance
Contact Us
Download
Search
Fossil collection records
Fossil organisms
Published references
Classifications of taxa in groups
Stratigraphic units
Data archives
Login
Classification of Polly 1993
G. †
Arfia
Van Valen 1965
show all
|
hide all
†
Arfia opisthotoma
Matthew 1901
†
Arfia shoshoniensis
Matthew and Granger 1915
G. †
Prototomus
Cope 1874
show all
|
hide all
†
Prototomus robustus
Matthew and Granger 1915