Death Pose

It's fairly common to find dinosaur skeletons preserved with their necks and skulls beng backward over their backs. This posture, commonly known as the "death pose," is the result of natural processes after the animal's death. The tendons in the neck of a carcass that has laid out on the surface of the ground for a long time dry out and contract, drawing the neck and skull backwards to the position in which it's preserved.