Dinosaur tracks show enormous sauropods roamed Northeast Asia over 120 million years ago

For decades, a dinosaur mystery lingered in a quiet stretch of land in northern Mongolia called Saizhurakh. People knew something was there. A short report from about 70 years ago mentioned dinosaur footprints, then the trail went cold. Now it’s back on the map. Researchers have confirmed that this long-lost site preserves footprints from both massive plant-eaters and large meat-eaters, all stamped into the same ancient surface. That single detail matters. It shows that northern Mongolia, once thought to be less active for large dinosaurs during that time, supported a full ecosystem with giants on both sides of the food chain.

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