Mount Morrison behind Red Rocks Park is also named after George Morrison. In the late 1800s, an important regional geologic layer of Late Jurassic age, the Morrison Formation, was named after the town of Morrison, and is today famous as the first discovery site of three 150-million-year-old dinosaurs, "Apatosaurus", "Diplodocus", and the Colorado state fossil, "Stegosaurus". The Morrison Formation covers parts of thirteen western states and has yielded much of our understanding of the extinct animals that lived in the West so long ago. In 1877, the holotypic remains of the dinosaurs "Stegosaurus armatus" and "Apatosaurus ajax" were discovered near Morrison by Arthur Lakes. The majority of these fossils were shipped to Othniel Charles Marsh at Yale's Peabody Museum of Natural History in New Haven, Connecticut. These finds from the Morrison area figured in the 19th century "Bone Wars" between rival paleontologists Marsh and Edward Drinker Cope. In 1896, the Late Jurassic section of sedimentary rock excavated by Lakes was formally named the Morrison Formation for the town near the prominent outcrops where it was described (Eldridge, 1896). In 1944, a type locality was designated at the roadcut along the north side of W. Alameda Parkway, north of Morrison, in SE/4 sec. 23, T. 4 S., R. 70 W. (Waldschmidt and LeRoy, 1944). The Morrison Natural History Museum houses and displays some fossils found by Lakes, and museum staff have begun reworking Lakes' original digs at Quarry 10. In 2006, the MNHM reported rare adult "Stegosaurus" tracks from the Morrison area. A year later the first hatchling "Stegosaurus" tracks were reported. These fossils are on display at the museum. Cretaceous-age dinosaur tracks and one of Lakes' historic dig sites can still be viewed on what is now known as Dinosaur Ridge east of Morrison. Also located near Morrison is a significant archaeological site; known as the LoDaisKa Site, it was inhabited for approximately 7,500 years. The Town of Morrison was officially incorporated following a unanimous election on January 9, 1906. Sixty-nine votes were cast. On February 13, 1906, a second election gave the newly created town a board of trustees. The first mayor was Thomas Cowan Morrison, son of the town's founder. The original trustees were Dr. Frank L. Luce, Charles Pike, Jacob Schneider, J.W. McLean, Peter O. Nelson, and Lawrence E. "Lee" LaGrow.