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Dinosaurs are a group of reptiles that dominated terrestrial ecosystems for over 160 million years, from around 230 million years ago until 66 million years ago, at the end of the Cretaceous period,[1] when all non-avian dinosaurs became extinct. Dinosaur remains have been found on every continent, including Antarctica. Vertebrate paleontology has become a global science, with major new discoveries in previously unexploited regions, most significantly the well-preserved feathered dinosaurs in China which have further solidified the link between the extinct non-avian dinosaurs and avian dinosaurs, birds.

See also


  1. ^ Renne, Paul R.; Deino, Alan L.; Hilgen, Frederik J.; Kuiper, Klaudia F.; Mark, Darren F.; Mitchell, William S.; Morgan, Leah E.; Mundil, Roland; Smit, Jan (7 February 2013). "Time Scales of Critical Events Around the Cretaceous-Paleogene Boundary". Science. 339 (6120): 684–687. Bibcode:2013Sci...339..684R. doi:10.1126/science.1230492. PMID 23393261.


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