A team of Japanese and Mongolian paleontologists have discovered the largest dinosaur footprint ever found in the Mongolian desert. The footprint is as big as a fully grown person, measuring 42 inches long and 30 inches wide.
It belongs to the Titanosaur, a dinosaur who, as its name suggests, was very, very large. Titanosaurs roamed the Earth about 70 to 90 million years ago. Herbivores with long necks, when they were fully grown, they could weigh up to 90 tons and stand over 60 feet tall.