SALT LAKE CITY (ABC4 News) When you think Tyrannosaurus Rex, you presume it was always the king of the dinosaurs, but a newly-discovered fossil tells us that wasn’t the case.

The fossil found right here in Utah is believed to be of this creature, “Moros Intrepidus.” It lived some 96 million years ago. But unlike the T-Rex, which stood about 12 feet tall and weighed up to eight tons, the Moros was between three and four feet tall.

Researchers believe Moros fills in the timeline between the earliest, smaller Tyrannosaurs and the T-Rex. While lightweight, the Moros was quite fast and, over millions of years, evolved into the more memorable T-Rex.

The findings were published today in “Communications Biology.”