File:Deinonychus antirrhopus hand - Carbon County Montana - Museum of the Rockies - 2013-07-08.jpg
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Summary
DescriptionDeinonychus antirrhopus hand - Carbon County Montana - Museum of the Rockies - 2013-07-08.jpg |
English: Fossil hand of a Deinonychus on display in the Museum of the Rockies in Bozeman, Montana. This specimen was collected in Carbon County, Montana.
A synonym for Deinonychus is the more familiar Velociraptor (made famous by the Jurassic Park movies). Deinonychus antirrhopus was first discovered in 1931 near Billings, Montana. Its name means "terrible claw", because it could lift the middle toe of its heavily clawed foot and slice with it like a razor. In the late 1960s, paleontologist John Ostrom published a series of papers about Deinonychus that completely revolutionized the way we think about dinosaurs. Previously, scientists thought of them as plodding, slow, cold-blooded creatures. But Ostrom proved that Deinonychus couldn't be cold-blooded, and was undoubtedly lightning-fast and very agile. Within just a few years, everyone accepted that dinosaurs had to be warm-blooded, and most were extremely active and mobile. This was the "Dinosaur Revolution" or "Dinosaur Renaissance", and it governs the way we think about dinos today. Deinonychus lived 115 to 108 million years ago in western North America. It was about 11 feet in length, and tended to run with its head lowered and tail stuck straight out as a counterbalance. In this position, it was only about three feet high at the hip. It weighed no more than 160 pounds. The 16-inch-long skull had 70 curved, blade-like teeth in a very narrow snout and it had stereoscopic vision. Deinonychus had strong forelimbs, powerful and very large hands, and three claws on each hand. The middle of the three toes on each hind foot had a sickle-shaped claw. The snap-tendons on that toe permitted it to be used like a scythe! Deinonychus was originally thought to be like most dinos -- reptilian and hairless. But since ancestors and close relatives of Deinonychus had feathers, it is bellieved that Deinonychus did as well. |
Date | |
Source | https://www.flickr.com/photos/23165290@N00/9325194698/ |
Author | Tim Evanson |
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This image was originally posted to Flickr by Tim Evanson at https://www.flickr.com/photos/23165290@N00/9325194698. It was reviewed on 6 August 2013 by FlickreviewR and was confirmed to be licensed under the terms of the cc-by-sa-2.0. |
6 August 2013
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8 July 2013
0.01666666666666666666 second
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 17:51, 6 August 2013 | 2,117 × 3,000 (5.42 MB) | Tim1965 | {{Information |Description ={{en|1=Fossil hand of a Deinonychus on display in the Museum of the Rockies in Bozeman, Montana. This specimen was collected in Carbon County, Montana. A synonym for Deinonychus is the more familiar "velociraptor" (made ... |
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Date and time of data generation | 15:29, 8 July 2013 |
Lens focal length | 55 mm |
Orientation | Normal |
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File change date and time | 20:58, 19 July 2013 |
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Date and time of digitizing | 15:29, 8 July 2013 |
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File source | Digital still camera |
Scene type | A directly photographed image |
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Focal length in 35 mm film | 82 mm |
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Date metadata was last modified | 16:58, 19 July 2013 |
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