Artistic illustration of the ‘Nagatitan.’ This sauropod lived in present-day Thailand during the Early Cretaceous period. Patchanop Boonsai Get the Popular Science daily newsletter💡 Breakthroughs, discoveries, and DIY tips sent six days a week. Not long before an asteroid crashed into Earth and wiped out most of the dinosaurs , a long-necked dinosaur the size of nine adult Asian elephants may have been near a windy river peacefully eating plants. The bones of the Nagatitan chaiyaphumensis (aka Nagatitan ) would rest there for millions of years, until paleontologists digging near a pond in northeastern Thailand found them. This newly discovered herbivore is the largest ever found in Southeast Asia and is described in a study published today in the journal Scientific Reports . Paleontologists found Nagatitan’s spine, rib, pelvis, and leg bones about 10 years ago.…