It isn't hard to imagine the world full of dinosaurs, even though these extinct animals haven't walked the earth for millions of years. Learn all about dinosaurs, including early dinosaur discoveries, dinosaur fossils, and dinosaur extinction.
  • About Dinosaurs
  • Early Triassic & Jurassic Dinosaurs
  • Middle & Late Jurassic Dinosaurs
  • Early Cretaceous Dinosaurs
  • Late Cretaceous Dinosaurs


Scutellosaurus was a very unusual dinosaur because it was a two-legged dinosaur that had armor. Most armored dinosaurs walked on all fours. Many scientists believe this dinosaur to be the ancestor of later larger armored dinosaurs.

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Archaepteryx was a very unique dinosaur in that it resembled a bird. It is known from only six fossils, but those fossils may be the most famous bones in the world. The Archaepteryx is the dinosaur that resembles modern birds the most.


Dromiceiomimus ("emu mimic") has been found both in the Late Cretaceous Horseshoe Canyon and the Judith River Formation of Alberta. It is very similar to Struthiomimus and Ornithomimus, but had much larger eyes and longer, more slender arms. Learn more about the Dromiceiomimus.

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