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Troodon
Troodon is a dubious genus of relatively small, bird-like dinosaurs known definitively from the Campanian age of the Cretaceous period. It includes at least one species, Troodon formosus, known from Montana.
Ceratosaurus
Ceratosaurus was a carnivorous theropod dinosaur in the Late Jurassic period (Kimmeridgian to Tithonian).
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