FOSSILS

Ornithopod Dinosaur Tracks in the Dakota Sandstone. The tracks were made on a coastal plain beside the Western Interior Seaway during the Cretaceous period, about 100 million years ago. Ornithopods were quadrapedal herbavores. The size of the track suggests this dinasaur was about 20-30 feet long. No bones were recovered at this site so it was not possible for paleontologists to identify a particular species of ornithopod. Dinosaur Ridge National Natural Landmark. Near Morrison, Jefferson...
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Ornithopod Dinosaur Tracks in the Dakota Sandstone. The tracks were made on a coastal plain beside the Western Interior Seaway during the Cretaceous period, about 100 million years ago. Ornithopods were quadrapedal herbavores. The size of the track suggests this dinasaur was about 20-30 feet long. No bones were recovered at this site so it was not possible for paleontologists to identify a particular species of ornithopod. Dinosaur Ridge National Natural Landmark. Near Morrison, Jefferson Co., Colo.
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