User Options
Toggle navigation
Login
Register
Login
Register
Main Site
Browse
Advanced Search
Featured
About
2 Specimen Results
Add all results to lightbox
Select results to add to lightbox
Sort by:
Title
Sort order:
Ascending
Descending
Start Over
Download results as:
Checklist
PDF (thumbnails)
Specimen information (Excel)
Add selected results to lightbox
Period:
Ordovician
Class:
Cephalopoda
FHSM IP-303
Isorthoceras junceum
(Hall, 1877)
Period(Early):
Ordovician
FHSM IP-2174
Spiroceras
(Meek, 1876)
Formation:
Decorah
Period(Early):
Ordovician
Next 36
Filter by
Phylum
Mollusca (2)
Order
Ammonitida (1)
Orthocerida (1)
Family
Proteoceratidae (1)
Spiroceratidae (1)
Genus
Isorthoceras (1)
Spiroceras (1)
Individual/Organization
Holtzman, R. (1)
Wooster, L.C. (1)
Period
Ordovician (2)
Epoch
Middle (1)
Formation
Decorah (1)
Country
United States of America (2)
State/Province
Indiana (1)
Minnesota (1)
County
Goodhue (1)
Wayne (1)