XL 4.6" Knightia Eocaena Fossil Fish Green River FM WY Eocene Age COA And Stand Leptauchenia This ancient archosaur's anatomy reveals

This ancient archosaur's anatomy reveals a creature caught between worlds

a strategy likely evolved to offset the high mortality rates among juveniles

and possibly even other ammonites

A fully-grown adult could have been up to nine meters long

XL 4.6" Knightia Eocaena Fossil Fish Green River FM WY Eocene Age COA And Stand Leptauchenia This ancient archosaur's anatomy revealsLocation: Kemmerer, Wyoming Weight: 1 Pound 1. 9 Ounces Dimensions: 9. 5 Inches Long, 6. 4 Inches Wide, 0. 2 Inches Thick (Plate) The Fish is: 4. 6 Inches Long, 1. 5 Inches Wide Comes with a Certificate of Authenticity. Comes with a Free Stand. The item pictured is the one you will receive. 50 million years old, Eocene age Knightia Eocaena is the most common fish in Fossil Lake and possibly the most frequently articulated vertebrate fossil worldwide.