File:Tylosaurus proriger (1).jpg
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| Description |
A fossil Tylosaurus proriger skull on display in the Sant Hall of Oceans in the Smithsonian Museum of Natural History. Tylosaurs were a species of mosasaur -- giant predatory lizards that lived in the oceans roughly 85 to to 65.5 million years ago. They lived in the Western Interior Seaway -- a vast, shallow ocean that ran across the middle of North American from the Gulf of Mexico to the Arctic Ocean. Tylosaurus proriger was the largest of the mosasaurs, about 14 m (46 ft) in length.[1] They looked like a huge snake, with a slight ridge running down the back. Tylosaurs had four flippers, one set just behind the head and another set about two-thirds of the way to the tail. They had long, narrow mouths (like an alligator's) filled with razor-sharp teeth. Tylosaurs were first discovered in Kansas in 1869, but skeletons have also been found in Alabama and Nebraska (as well as New Zealand and Belgium). This particular skull was found by George F. Sternberg in 1926 in the Smoky Hill Chalk formation in Logan County, Kansas. The Sant Hall of Oceans is the largest exhibit space in the museum, with 674 specimens and models in a 23,000-square-foot (2,136 sq. m) exhibition space. The hall features a replica of a 45-foot (13.7 m) long North Atlantic right whale and two preserved giant squid (one an adult, one a juvenile). The hall is named for Victoria and Roger Sant of Washington, D.C., who donated $15 million to create and endow the hall. It opened in 2008. The exhibits, displays, videos, and signage in the hall was created in partnership with the U.S. National Oceanic and Atmospheric Administration (NOAA) to show the ocean as a global system. |
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| Source |
Tylosaurus proriger - skull - Smithsonian Museum of Natural History - 2012-05-17
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| Author | Tim from Washington, D.C., United States of America |
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This image, originally posted to Flickr, was reviewed on 19 October 2012 by the administrator or reviewer File Upload Bot (Magnus Manske), who confirmed that it was available on Flickr under the stated license on that date. |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
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| current | 01:39, 19 October 2012 | | 2,000 × 1,040 (1.24 MB) | File Upload Bot (Magnus Manske) (talk | contribs) | Transferred from Flickr by User:FunkMonk using flickr2commons |
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