Vintage Chicago Tribune: The Field Museum evolves — take a look back as it turns 130 chicagotribune.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from chicagotribune.com Daily Mail and Mail on Sunday newspapers.
The Field Museum Now Has an Incredibly Rare Fossil Proving Birds Are Dinosaurs. Here's a Behind-the-Scenes Look at How They Got It | Chicago News wttw.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from wttw.com Daily Mail and Mail on Sunday newspapers.
Archaeopteryx, genus of feathered dinosaur that was once thought to be the oldest known fossil bird. Its wing design and the structure and arrangement of its wing feathers were similar to that of most living birds, but its bone structure suggests that it engaged only in bursts of powered flight over short distances.
Pterosaurs, the flying reptiles of the dinosaur era, originated in the Late Triassic (227 million years ago) and became extinct at the end-Cretaceous extinction event (66 million years ago)