Early tyrannosaurs would have feared this predator

Siats meekerorum probably kept early relatives of T. rex from evolving into giant predators themselves

By Sid Perkins, 09:35 AM December 7, 2013

Tyrannosaurus rex was one of the most fearsome creatures to walk the planet. Some 65 million years ago, this 12-meter (40-foot) long meat-eating dinosaur chomped its prey using teeth the size of bananas. Yet scientists have wondered why its ancestors remained relatively small for millions of years. Now, the discovery of a new meat eater may offer some answers. This newfound predator may have preyed on T. rex’s ancestors. That should have kept them small and on the run.

Scientists call the new ...

Source URL: https://student.societyforscience.org/article/early-tyrannosaurs-feared-newly-discovered-dino-species-Siats-meekerorum