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Apatasaurus tail section
Big Al Two
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Shell, WY 82441
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Fossil Sites in the Bighorn Basin of Wyoming
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The Bighorn Basin of Wyoming contains extensively documented fossil-bearing deposits that date from 550 million years ago (Cambrian Period) to the present. These include world famous outcrops that contain dinosaur bones and tracksites, ancient marine reptiles, and primitive mammal fossils. These deposits are located on privately held land as well as on public land, both state and federal.
Major Dinosaur Fossil Sites in the Bighorn Basin
Howe Dinosaur Quarry
One of the best known fossil sites in the basin is the Howe Dinosaur Quarry near Shell, Wyoming. First excavated in 1934 by the famous paleontologist, Barnum Brown, of the American Museum of Natural History in New York, this became a world renowned site for its large assemblage of dinosaur bones (over 4,000 fossilized bones), mostly sauropods, in a single area. Sinclair Oil Company financed this expedition and it was documented in major news outlets and scientific publications.
The site lay dormant for nearly 60 years until Swiss paleontologist Dr. H. J. (Kiby) Siber, owner of the Saurier Museum Aathal in Switzerland, leased the "bone rights" from the owners and reopened the site. Over the ensuing fifteen years or so, Kirby discovered and collected several remarkable dinosaur specimens, many virtually complete, including;
'Big Al Two', the most complete Allosaurus specimen ever discovered
'Baby Toni', the only known juvenile sauropod (six months old)
'HQ1', Diplodocus, plus six other Diplodocus specimens
Siber’s team also discovered Big Al, the subject of the BBC/Discovery video entitled “Allosaur”. However, he had inadvertently strayed onto public land, instead of the private site, and this find was eventually collected by a team from the Museum of the Rockies and the University of Wyoming. See Kirby's Saurier Museum Aathal website for additional data.
Red Canyon Ranch Dinosaur Quarry
Paleontologist Bob Simon, working at the Red Canyon Ranch near Shell, Wyoming collected a virtually complete articulated Stegosaurus skeleton in 2004 (see image), with the assistance of dinosaur hunter Kirby Siber and his crew. Named “Sarah” after the daughter of the owners of Red Canyon Ranch, the first public display of the skeleton reconstruction of Sarah was at the Tucson Gem, Mineral and Fossil Show in February, 2008. In 2007, Bob again struck paydirt, uncovering a virtually complete articulated Camarasaurus, which has now been excavated and resides in a museum in Japan. The Red Canyon Ranch Dinosaur Quarry is situated on private land near Shell.
Dana Dinosaur Quarry
Another private site, the Dana Dinosaur Quarry near Ten Sleep, Wyoming has rapidly become a major dinosaur quarry. Over a dozen individual skeletons have so far been discovered, representing a variety of species, including predator and prey, both large and small, including "Einstein", a huge Apatosaurus which was recently displayed in the Abu Dhabi airport.
Paleontologists from the Smithsonian Institution, National Museum of Natural History, led by Dr. Michael Brett-Surman, collected marine reptile specimens from a Bighorn Basin site, which was discovered in 1994 by Row Manuel. A reproduction of one of the Ichthyosaur specimens, “Ikky”, is currently on display in the Shell Post Office in Shell, Wyoming. Also, Dr. Robin O'Keefe, a biology professor at Marshall University, collected a previously unknown species of plesiosaur, Tatenectes laramiensis, near Greybull.
Red Gulch Dinosaur Tracksite
The Red Gulch Dinosaur Tracksite near Shell, Wyoming is the largest dinosaur tracksite in Wyoming, and one of two Middle Jurassic age tracksites known in the world. The tracksite area contains literally thousands of rare Middle Jurassic age dinosaur tracks embedded in oolitic limestone. Located on public land near Shell, Wyoming, this site covers 40 acres set-aside by the USDI-Bureau of Land Management. Click on Tracksites for more information, including other major tracksites in the basin area.
Mammal Fossil Sites
The middle of the Bighorn Basin is dotted with over 1,ooo scientifically documented fossil collection sites. The first complete specimens of Eohippus, the early dawn horse, and Coryphodon, the first large browsing animal, were discovered and collected in this area. And, the Natural Trap Cave in the Big Horns essentially contains the entire record of the Pleistocene up until 10,000 - 12,000 years ago.
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Last updated: March 24, 2014
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