Synthetoceras tricornatus poster Dsungaripterus we see the dromaeosaurid theropod

we see the dromaeosaurid theropod dinosaur Acheroraptor hunting an ornithurine bird

Some paleontologists suggest they are a long-extinct group with no living relatives

Ever felt the need to explain to someone why Pteranodon or Mosasaurus aren't dinosaurs

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what better way to show it than with this bold pin button

Synthetoceras tricornatus poster Dsungaripterus we see the dromaeosaurid theropodThe males of this extinct ungulate were armed with a distinctive Y shaped horns that grew above its snout. Such a strange forked structure could have helped them intimidate each other to settle territorial disputes.