Super Robot Lifeform Transformers: Legend of the Great Valley

the Decepticons have escaped from imprisonment and have set there eyes on the dinosaurs of the Great Valley, who have survived into modern times thanks to suspended animation by the the "Dynasty of Primes"! the Autobots take action once again to defend the dinosaurs from from Megatron and the Decepticons Plus, Littlefoot and his friends are also chosen to save the world too