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2 Specimen Results
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Phylum:
Chordata
Period:
Ordovician
Filter by
Order
(1)
Astrapidiformes (1)
Class
Conodonta (1)
Pteraspidomorpha (1)
Family
Archeognathidae (1)
Astraspididae (1)
Genus
Archeognathus (1)
Astraspis (1)
Individual/Organization
Zakrzewski, R.J. (1)
Bonner, O.W. (2)
Klapper, G. (1)
Period
Ordovician (2)
Formation
Harding (2)
Country
United States of America (2)
State/Province
Colorado (2)
County
Freemont (2)