Tyrannosaurus rex evolved in North America, but its direct ancestor came from Asia, crossing a land bridge connecting the continents more than 70 million years ago, according to a new study.

The biological taxonomy system can be a confusing and sometimes imperfect method for categorizing life. However, it can also ...

Of all the predators to walk the Earth, none were as fearsome as the T. rex, but how would the king of the lizards fare if it ...