Chalk Aberration: the Roar of the Ancient Dragon

He traveled through time and became a baby Tyrannosaurus Rex with residual blood. He was on the verge of death at the beginning, and his mother died after the nest was broken. After activating the devouring system, I discovered that in this world, dinosaurs can spit thunder, triceratops carries a mountain of bones, and pterosaurs cover the sky. And he wants to devour everything and become the ancestor of dragons.