MARK HALLETT PALEOART / SCIENCE PHOTO LIBRARY MARK HALLETT PALEOART / SCIENCE PHOTO LIBRARY
Tyrannosaurus rex illustration.Two Tyrannosaurus rex adults are alert and ready to hunt. A pterodactyloid pterosaur Pteranodon ingens can be seen overhead. The scene takes place on the margin of a floodplain in the future area of western Montana, during the Hell Creek formational time of the late Cretaceous Period.
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