Particle.news
Species Evolution Human Evolution Animal Evolution Dinosaurs Co-evolution Great Oxidation Event Cretaceous Period Species Origins Species Development Arthropods Arachnid Evolution Amphibians Transition from Sea to Land Pterosaur Evolution Charles Darwin Bird Evolution Species Divergence Species Extinction Extinction Events Amniotes Human Ancestry Marine Reptiles Ancestry Insect Evolution
Detailed sieving of sediments at Alaska’s Prince Creek Formation uncovered more than 50 microscopic bones that reveal early bird lineages had adapted to polar conditions 73 million years ago.
