T. Rex-Pteranodon Skeletal Hybrid

A creature accidentally created by the characters in the movie Triassic Attack.

History
A native american named Dakota resurrected a Velociraptor, a Tyrannosaurus Rex and a Pteranodon. These skeletons could reassemble themselves after being dismantled. While the Velociraptor was locked in a water tower, The T. Rex and the Pteranodon converged on a university and they were both shot. The bones mixed and they ended up reassembling as one hybrid skeleton.