Climate change helped some dinosaurs migrate to Greenland
A drop in CO2 levels helped massive plant eaters trek from South America to Greenland
Sauropodomorphs, such as this Plateosaurus (illustrated), walked about 10,000 kilometers from South America to Greenland when CO2 levels dropped in the atmosphere.
James Kuether/Science Source
A drop in carbon dioxide levels may have helped sauropodomorphs, early relatives of the largest animal to ever walk the earth, migrate thousands of kilometers north past once-forbidding deserts around 214 million years ago.