Earliest known seed-eating perching bird discovered in Fossil Lake, Wyoming
Fossilized Species Had the Body of a Bird and Skull of a Dinosaur - CNET
World's first bird? New fossil bumps Archaeopteryx off its perch. - CSMonitor.com
Fossil Birds - Field Museum
File:Fossil bird Field Museum.jpg - Wikipedia
Green River Formation - Vertebrates
File:Bird fossil in Canada.jpg - Wikimedia Commons
Fossil Bird Soared above Utah's Dinosaurs - Scientific American Blog Network
Archaeornithes Reptile-like Bird Fossil by Sinclair Stammers/science Photo Library
The opposite birds: What wiped out the ancient rulers of the sky | New Scientist
Fossil Bird Species - Fossil Butte National Monument (U.S. National Park Service)
Earliest Bird Claim Ruffles Feathers | Science | AAAS
Bird (Project: Mammalia) | Novum Terram Wiki | Fandom
Fossil Bird Species - Fossil Butte National Monument (U.S. National Park Service)
Baby bird fossil is 'rarest of the rare' - BBC News
Fossil of Archaeopterix, one of the first birds - Stock Image - E445/0105 - Science Photo Library
From China, A Flock Of Fossils - Science Friday
A Dino Locked Inside A Bird Skull - Asian Scientist Magazine
Paleontologists Find Fossil of 119-Million-Year-Old Beaked Bird | Sci.News
Wonderchicken: Oldest bird fossil discovered
How birds got their beaks - new fossil evidence - BBC News
Scientists put famed fossil back on its perch as one of the earliest birds
