Pay in 4 interest-free payments of $12.72 Learn more
Ships within 48 hours · Estimated delivery Aug 10 - Aug 15
are related to the extinct Eurypterids
the most famous of which are the handful of specimens of the ancient bird Archaeopteryx
Because their armor was so fragile
Their age is estimated to be between 500
Involute means small or tightly spiraled as opposed to evolute or broadly outward spiraling
Keichousaurus hui, 3 Triassic Marine Reptiles Ouranosaurus are related to the extinctKeichousaurus hui 3 Triassic Marine Reptiles Keichousaurus hui (KEE chi oh SAUR us) was an early reptile (not a dinosaur) that lived during the Triassic period, roughly 210 million years ago. This specimen is a composite showing 3 specimens as in a mass mortality. Keichousaurus was about 6 11 inches long and had a long neck, a long tail, five toed feet with long digits, and a pointed head with sharp teeth. It may have lived in the water. This
US$ 16.95
US$ 213.50
US$ 24.95
US$ 18.95
US$ 16.95
US$ 725.00
US$ 16.95
US$ 265.50
US$ 23.25