Drop in CO2 helped dinosaurs migrate from South America to Greenland

Washington DC (UPI) Feb 15, 2021

Every year, the Arctic tern migrates from pole to pole, flying thousands of miles in a matter of weeks. Species as small as dragonflies and as big as gray whales swim and fly from continent to continent in just a few months. According to a new study, it took the world's largest herbivorous dinosaurs, Brontosaurus and Brachiosaurus, some 15 million years to trek the length of the superco