Claire. Posted September 28, 2016 #1 Share Posted September 28, 2016 Dinosaur Horns and Crests Tied to Rapid Growth Spurt Some dinosaurs that had bony protrusions on their skulls — such as horns, crests and knobs — evolved into giant dinosaurs 20 times faster than their relatives without skull ornaments did, a new study finds. The study, which focused on theropods — a group of mostly carnivorous, bipedal dinosaurs that includes the giant Tyrannosaurus rex and fearsome Albertosaurus — could explain why these dinosaurs got big so fast, the researchers said. Paleontologists have hypothesized for years that these bony protrusions on dinosaur skulls served to intimidate, defend and communicate, possibly signaling which individuals were sexually mature or socially dominant, the researchers said. Read more: 3 Link to comment Share on other sites More sharing options...
oldrover Posted September 29, 2016 #2 Share Posted September 29, 2016 http://www.livescience.com/56280-theropod-skull-ornaments-linked-to-dinosaur-size.html Here's the rest of the article. The read more link didn't work. 1 Link to comment Share on other sites More sharing options...
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