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which ran all along its back giving it an eel-like appearance
Because their armor was so fragile
The first mosasaur fossils were found in the 1770's in a mine in the Netherlands
the most famous of which are the handful of specimens of the ancient bird Archaeopteryx
Sclerocephalus was once thought to be closely related to eryopoid temnospondyls
Keichousaurus hui, 3 Triassic Marine Reptiles Ouranosaurus which ran all along itsKeichousaurus 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
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