Copper Ridge Sauropod Dinosaur Tracks Footprints from the Morrison Formation Typical tracks from the Morrison Formation include those of a brontosaurs b large theropods c small theropods Cr edits Thi

Copper Ridge Sauropod Dinosaur Tracks Footprints from the Morrison Formation Typical tracks from the Morrison Formation include those of a brontosaurs b large theropods c small theropods Cr edits Thi - Description

Research and brochure design by the University of Colorado at Denver Dinosaur Trackers Research Group and the Bureau of Land Manage ment Fossil footprints are a rare nonrenewable resource Please help to preserve and protect them Alternating long and ID: 21013 Download Pdf

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Copper Ridge Sauropod Dinosaur Tracks Footprints from the Morrison Formation Typical tracks from the Morrison Formation include those of a brontosaurs b large theropods c small theropods Cr edits Thi

Research and brochure design by the University of Colorado at Denver Dinosaur Trackers Research Group and the Bureau of Land Manage ment Fossil footprints are a rare nonrenewable resource Please help to preserve and protect them Alternating long and

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Copper Ridge Sauropod Dinosaur Tracks Footprints from the Morrison Formation Typical tracks from the Morrison Formation include those of a brontosaurs b large theropods c small theropods Cr edits Thi




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Copper Ridge Sauropod Dinosaur Tracks Footprints from the Morrison Formation Typical tracks from the Morrison Formation include those of a brontosaurs b large theropods c small theropods Cr edits This site was discov- ered by Linda Dale Jennings Lockley in 1989. Research and brochure design by the University of Colorado at Denver, Dinosaur Trackers Research Group and the Bureau of Land Manage- ment. Fossil footprints are a rare, non-renewable resource. Please help to preserve and protect them. Alternating long and short steps made by a theropod with an irregular gait.

Directions to Copper Ridge From Moab, go north on U.S. Highway 191 for 23 miles. Turn right 3/4 mile past milepost 148 (just north of the microwave tower). Cross the railroad tracks and follow the signs south on the dirt road. It is 2 miles to the tracksite from the highway. If coming from Crescent Jct. (I-70), turn left 1/4 mile past milepost 149, cross the railroad tracks and continue south on the dirt road. The dirt road is suitable for passenger cars driven carefully. AVOID this road when wet. Crescent Junction Exit –180 Thompson Springs Microwave tower Moab 191 70 313 SAUROPOD TRACK SITE

(23 miles north of Moab) ARCHES NATIONAL PARK 279 BUREAU OF LAND MANAGEMENT Moab Field Office 82 East Dogwood Moab, UT 84532 BLM/UT/GI-99-008-8000
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Location of dinosaur tracksites in the Morrison Formation of the Western USA. This map of the Copper Ridge Sauropod site shows trackways of a turning brontosaur and four carnivores. Copper Ridge The Copper Ridge Sauropod Tracksite was discovered in 1989. The site which is located north of the Moab airport, reveals the first brontosaurus trackway reported from Utah, as well as trackways of four theropods of vari- ous sizes. The

dinosaurs walked in several directions across a ripple-marked sand de- posit that had accumulated in an ancient river channel. The brontosaur had large hind feet, about two feet in diameter, and smaller front feet that did not leave such clear impressions. The whole trackway makes a pronounced turn to the right. Such obvious changes of direction are rare in fossil trackways. We do not know which of the species of brontosaur made these tracks. The most common types were Camarasaurus, Apatosaurus and Diplodocus. The three-toed tracks range from fifteen inches in length to about eight inches. The

large trackmaker may have been Allosaurus, the most common carnivore in Morrison times. It is interesting to note that the track- way to the east shows an alternation of long steps (about 5 feet) and short steps (about 4 feet). No one knows the reason for this irregular gait - perhaps the animal was hurt and limping slightly. The smaller three-toed tracks, which are hard to see except in low angle light, could have been made by one of a number of smaller bipedal species. Morrison Formation Sites The Morrison Formation is one of the most famous dinosaur-bearing deposits in the world. It has

yielded some of the best known Jurassic dinosaurs, including Apatosaurus or “Brontosaurus”), Diplodocus, Stegosaurus and Allosaurus. Productive dinosaur quarries in the Morrison Formation include Dinosaur National Monument and the Cleveland Lloyd Dinosaur Quarry. Skeletal remains of 150 million year old dinosaurs are very abundant in the Morrison Formation, but tracks are known from only about two dozen sites. With the exception of the giant Purgatoire Valley tracksite in southeast Colorado, most sites only yield a handful of three-toed tracks. This trackway is rare for its abundance of

varying tracks.