This is a replica of one Tyrannosaurus rex track and one Caenagnathid (probably Chirostenotes or Caenagnathus) from a Cretaceous trackway. The entire trackway was molded on site at the Zerbst Ranch in Wyoming.
These tracks were formed in and around an oxbow lake during the Maastrichtian Period. Some portions of the trackway surface preserved evidence of algal colonies that were also present at that time. Maastrichtian dinosaur footprints are very rare, and it is believed the presence of the algae is the reason this astounding sequence of tracks was so well preserved.
The Caenagnathid footprint reveals the presence of a nearly backward hallux, a feature typically found on birds.
Available as an unpainted, unmounted cast suitable for some research or reference purposes. Note: some portions of the original fossil may have been scientifically restored.