(CNN) Scientists have discovered a new species of dinosaur -- and it's a big deal. That makes it a part of a group of dinosaurs known as the Titanosauria, which includes the largest land animals known to science. But what's even more remarkable about this discovery is what it says about the evolution of dinosaurs. For more than 250 years, most dinosaur bones have been found in Europe, North America and Asia. And that means the course of dinosaur evolution there isn't well understood.

Source: CNN January 30, 2018 01:30 UTC