Tyrannosaurus Rex may have been the "tyrant lizard king" but before the T-Rex became titanic and ferocious to dominate what is now North America, their ancestors weren't really of the elite race: they were small, gangly, agile, adapted to a crouching lifestyle under the shadow of much larger carnivores. Those are the Moros Intrepidus.
@ Moros Intrepidus.
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