Wikipedia
Chelonipus
Chelonipus is a trace fossil ichnogenus from the Late Jurassic Morrison Formation. It was found by D. M. Lovelace and S. D. Lovelace. This particular fossil has been dated to have lived between 251.3 to 150.8 Ma. All Trace fossils are standard carbon dated. The fossil is now distributed in Colorado and Wyoming. The fossil depicts the foot of an animal and was discovered in Colorado in 2012.