This small, horned dinosaur is Psittacosaurus, meaning “parrot lizard.” Scientists initially named this relative of Triceratops for its parrotlike beak; later they found evidence that it had feathery fibers along its tail. These simple fibers are an early stage of feather evolution and have been found on many dinosaurs.


  • Title: Psittacosaurus
  • Creator: Photo: AMNH/C. Chesek

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