Why Isn't Pterodactyl a Dinosaur?

Are Pterodactyls and other pterosaurs considered dinosaurs? There are flying dinosaurs, right? And what are dimetrodon and plesiosaurs? Paleontologist Danny Barta explains what a dinosaur is, and is not!

If you’re more of a space person, check out “Why isn’t Pluto a planet?” here: https://www.youtube.com/watch?v=UbXjqdNRaLY

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