The –est Paleontology

World’s largest dinosaur discovered

Gigantic herbivore takes title for heaviest land animal

Dreadnoughtus schrani illustration

SUPER SIZED  A plant-eating dinosaur named Dreadnoughtus schrani has claimed the record for most massive land animal discovered to date.

Lacovara et al/Scientific Reports 2014

By Meghan Rosen

- More than 2 years ago

A newly discovered dinosaur species makes Tyrannosaurus rex look like a munchkin. The towering behemoth, which stretched a bit longer than a 25-meter swimming pool and as tall as a two-story building, weighed about 59,000 kilograms — more than seven T.