name = "Archelon"
image_width = 250px
image_caption = Artist's rendition
phylum = Chordata
classis = Sauropsida
familia = Protostegidae
genus = "Archelon"
binomial = "Archelon ischyros"
binomial_authority = Wieland,
:"ARCHELON is also a sea-turtle conservation society, see
ARCHELON, the Sea Turtle Protection Society of Greece"
"Archelon" is a
genusof extinct sea turtle, the largest that has ever been documented. The first specimen of "Archelon" (YPM 3000) was collected from the Pierre Shale of South Dakota by Dr. G.R. Wieland in 1895 and described by him the following year (Wieland, 1896). The largest "Archelon" fossil, found in the Pierre Shale of South Dakotain the 1970s, measures more than 4 meters (13.5 feet) long, and about 4.87 meters (16 feet) wide from flipper to flipper. It was a marine turtle, distantly related to present day Leatherback Sea Turtles.http://www.uhaul.com/supergraphics/turtle/archelon.html] Its fossils date to 70 million years ago in the Cretaceousperiod, when a shallow sea covered most of central North America. Most of the known remains have been found in South Dakotaand Wyoming. Though anatomically similar to the earlier species "Protostega gigas", it was much larger. [ [http://www.oceansofkansas.com/Turtles.html Marine Turtles ] ]
Unlike most modern turtles, "Archelon" did not have a solid shell, but instead had a skeletal framework supporting a leathery or bony carapace. Other distinguishing features include a pointed tail, a narrow skull, a relatively narrow, high-vaulted shell, and a pronounced overbite. They probably had a very strong bite, and were optimized for feeding on
pelagic molluskssuch as squid. [http://www.bhigr.com/pages/info/info_arch.htm BHI/Fossils & Minerals/Rept. and Amph./Archelon ] ] One theory concerning the one specimen exhibited by the National Natural History Museum in Viennais that it may have died while brumating on the ocean floor. However, brumation in reptiles is a response to cold weather and it is unlikely that the Western Interior Sea was ever that cold. This same specimen also suggests a century-long life span.
The live weight of an "Archelon ischyros" is estimated at more than 2,200 kilograms (4,500 pounds) fact|date=June 2008.
An "Archelon" made an appearance in the
Hammer Film Productions1966 remake of " One Million Years B.C.". "Archelon" also appeared in the " Walking with Dinosaurs" spinoff special " Sea Monsters".
* [http://www.uhaul.com/supergraphics/turtle/archelon.html The Giant Archelon Ischyros]
* Hay, O. P. 1908. The fossil turtles of North America. Carnegie Institution of Washington, Publication No. 75, 568 pp, 113 pl.
* Wieland, G. R. 1896. "Archelon ischyros": a new gigantic cryptodire testudinate from the Fort Pierre Cretaceous of South Dakota. American Journal of Science, 4th Series 2(12):399-412, pl. v.
* Wieland, G. R. 1902. Notes on the Cretaceous turtles, "Toxochelys" and "Archelon", with a classification of the marine Testudinata. American Journal of Science, Series 4, 14:95-108, 2 text-figs.
* Wieland, G. R. 1906. The osteology of "Protostega", Memoirs of the Carnegie Museum, 2(7):279-305.
* Wieland, G. R. 1909. Revision of the Protostegidae. American Journal of Science, Series 4. 27(158):101-130, pls. ii-iv, 12 text-figs.
[http://www.bhigr.com/pages/info/info_arch.htm Black Hills Institute of Geological Research]
[http://www.oceansofkansas.com/Turtles.html Oceans of Kansas Paleontology]
Wikimedia Foundation. 2010.
Look at other dictionaries:
Archelon — Lebenrekonstruktion von Archelon ischyros Zeitraum Obere Kreide (Campanium) 72 Mio. Jahre Fundorte Nordamerika, USA: South Dakota … Deutsch Wikipedia
Archelon — Archelon … Wikipédia en Français
Archelon — Saltar a navegación, búsqueda ? Archelon Estado de conservación … Wikipedia Español
Archelon — ischyros … Wikipédia en Français
Archelon — ▪ fossil sea turtle extinct giant sea turtle known from fossilized remains found in North American rocks of the Late Cretaceous epoch (100 million to 66 million years ago). Archelon, protected by a shell similar to that found in modern sea… … Universalium
Archelon — … Википедия
Archelon — Ar|che|lon das; s, s <zu gr. arche̅ »Anfang, Ursprung« u. chelo̅nē »Schildkröte«> fossile Riesenschildkröte aus der Kreidezeit (Geol.) … Das große Fremdwörterbuch
archelon — ar·che·lon … English syllables
archelon — ˈärkəˌlän noun Usage: capitalized Etymology: New Latin, probably irregular from archi + Greek chelōnē tortoise; akin to Greek chelys tortoise more at chelys : a genus of very large extinct marine turtles from the Cretaceous of So. Dakota having a … Useful english dictionary
Archelon ischyros — Archelon Archelon … Wikipédia en Français