Trachodon mummy
Encyclopedia
The Trachodon
Trachodon
Trachodon is a dubious genus of hadrosaurid dinosaur based on teeth from the Campanian-age Upper Cretaceous Judith River Formation of Montana, U.S.A...

 mummy
is a very well preserved fossil of Edmontosaurus
Edmontosaurus
Edmontosaurus is a genus of crestless hadrosaurid dinosaur. It contains two species: Edmontosaurus regalis and Edmontosaurus annectens. Fossils of E. regalis have been found in rocks of western North America that date from the late Campanian stage of the Cretaceous Period 73 million years ago,...

 annectens
, a duckbilled dinosaur
Dinosaur
Dinosaurs are a diverse group of animals of the clade and superorder Dinosauria. They were the dominant terrestrial vertebrates for over 160 million years, from the late Triassic period until the end of the Cretaceous , when the Cretaceous–Paleogene extinction event led to the extinction of...

. It was found by Charles Hazelius Sternberg
Charles Hazelius Sternberg
Charles Hazelius Sternberg , was an American fossil collector and amateur paleontologist. His older brother, Dr. George M. Sternberg was a military surgeon assigned to Fort Harker near Ellsworth, Kansas and brought the rest of Sternberg family to Kansas to live on his ranch about 1868...

 and his three sons near Lusk, Wyoming
Lusk, Wyoming
Lusk is a town in Niobrara County, Wyoming, United States. The population was 1,447 at the 2000 census. It is the county seat of Niobrara County. The town was laid out in June 1886 by engineers working on the Wyoming Central Railway. It was named after Frank S...

, USA in 1908. Although Sternberg was working under contract to the British Museum of Natural History, Henry Fairfield Osborn
Henry Fairfield Osborn
Henry Fairfield Osborn, Sr. ForMemRS was an American geologist, paleontologist, and eugenicist.-Early life and career:...

 of the American Museum of Natural History
American Museum of Natural History
The American Museum of Natural History , located on the Upper West Side of Manhattan in New York City, United States, is one of the largest and most celebrated museums in the world...

 managed to secure the mummy
Mummy
A mummy is a body, human or animal, whose skin and organs have been preserved by either intentional or incidental exposure to chemicals, extreme coldness , very low humidity, or lack of air when bodies are submerged in bogs, so that the recovered body will not decay further if kept in cool and dry...

 for $2,000.

The mummy

The mummy was found lying on its back with its head pulled under its body, while its right arm stuck out into the air. The skin of the chest and abdominal region was pulled into the body cavity, and the tail, hind feet, and hind portion of the pelvis had eroded away. The hands of the Edmontosaurus and other species unearthed later suggested the presence of webbed feet, but was later found to be inconsistent with footprint evidence. It has since then been proposed that hadrosaur forefeet have a hard, horseshoe-shaped pad. The webbed skin was later found to be from the postmortem displacement of loose skin of the hand.

Osborn's description

In 1912, Osborn came up with a description of the fossil and a theory to its mummification:


"After a natural death (in other words, not death by predators) the body lay exposed to the sun for a long time, perhaps on a sand bar or in a stream. The muscles and soft internal tissues became completely dried and shrunken while the skin, hardened and leathery, shrank around the limbs and was drawn down along the bones. In the stomach and abdominal areas the skin was drawn within the body cavity, while along the sides of the body and on the arms, it was formed into creases and folds. At some later date, the "mummy" may have been caught in a sudden flood and carried downstream and rapidly buried in fine sand and clay. A cast, or impression, of the skin formed in the sand before the skin and other soft parts decayed. There is no remnant of the actual skin preserved only its imprint."

See also

  • Malta, Montana
    Malta, Montana
    Malta is a city in and the county seat of Phillips County, Montana, United States, located at the intersection of U.S. Routes 2 and 191. The population was 2,120 at the 2000 census.-History:...

    , where mummified Brachylophosaurus
    Brachylophosaurus
    Brachylophosaurus was a mid-sized member of the hadrosaurid family of dinosaurs. It is known from several skeletons and bonebed material from the Judith River Formation of Montana and the Oldman Formation of Alberta, living about 76.5 million years ago....

    "Leonardo" was discovered

Sources and external links

The source of this article is wikipedia, the free encyclopedia.  The text of this article is licensed under the GFDL.
 
x
OK