You have been sent 90 million years ago, before humanity was borne. You were sent with immortality and invulnerability to all harm and diseases. But you can still be killed as long as it is done by privation of food or water.

you look around and find yourself in a lush jungle, large long necked dinosaurs are eating some leaves and afar you can see pterodactyls in the sky. The sun is rising and you feel your stomach rumble... What do you do next?