Bizarre Dinosaurs Shed Light on Adaptation

Dinosaurs were weird. Some had horns growing from their foreheads like mythological unicorns. Others had claws as long and dangerous as rusty pitchforks. Several had spikes around their necks that made them look like temporally displaced punk rockers.

Paleontologists believe that these horns, claws, and spikes in addition to towering necks, feathered limbs, pointy fingers, and shrunken arms had purpose. Discovering what those purposes were provides paleontologists insight to the range of adaptive strategies throughout evolution.