The KT-War

Sixty-five million years ago, an artificial alien intelligence arrives on prehistoric Earth, intent on strip-mining the planet. When robotic automations kill a mother T. rex, her surviving hatchling teams up with an adoptive raptor pack to wage a guerrilla war against the invading forces of war-bots and giant cloned-cyborgs. As more prehistoric beasts join the battle, they confront the invaders' terrifying Doomsday weapons, including a deadly mutagen and a colossal asteroid poised to obliterate their world.