Scientists have declared that the recently found remains of a prehistoric creature belong to a previously unknown relative of the Tyrannosaurus rex, slightly more primitive but equally large and fearsome. This newly identified species is named Tyrannosaurus mcraeensis, writes New Atlas. Tyrannosaurus mcraeensis was 12 meters tall and weighed 10 tons. Compared to its closest relative, it had a longer but narrower lower jaw with blunter teeth, and its chin and eye ridges were less prominent. Scientists state that Tyrannosaurus mcraeensis lived in North America at least 72 million years ago, appr…