Paleontologists in New Mexico say fossils of the newly discovered 10-foot-tall Tawa hallae shed new light on dinosaur origins. The 213-million-year-old remains—old even for a dinosaur—were found alongside fossils of other early meat eaters. But the closest relatives of those species lived in South America, where the first dinosaurs may have evolved. The find suggests several waves of dinosaurs colonized North America when the two continents were in greater contact as part of the landmass called Pangea.
For more on Tawa hallae check out our "Dinosaur Tracking" blog.
Want better willpower? Learn how to just say no with this step-by-step guide on boosting your self-control. In this one-minute video, Ask Smithsonian host Eric Schulze dishes on the science behind willpower – what saps it and what makes it stronger
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