Pingie: HTTP:: Pterosaurs Preferred Landing on Prehistoric 039 Runways 039

HTTP:: Pterosaurs Preferred Landing on Prehistoric 039 Runways 039
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Archaeologists have recently managed to uncover a first-of-its-kind prehistoric runway for pterosaurs, the ancient ancestors of modern birds. The tracks, found at a location dubbed Pterosaur Beach, in southwestern France, are the first evidence to show how these animals landed and took off, which is something that is apparently very rare to come by. The main reason for this is the fact that the proto-birds were very light, and did not leave a massive imprint on the ground, such as the largest dinosaurs that ever roamed the Earth, the 50-tonne sauropods, did, LiveScience reports. The French location proves, however, to have been a very suitable place for recording the landings and take-offs of the light pterosaurs. Made entirely out of fine-grained limestone deposits, the structure provided the perfect scaffolding on which the two-foot-long feet of the proto-birds got molded and stored over millions of years. The tracks have been determined to date back to some 140 million!
years ago, to the Late Jurassic period. The pterosaur was a pterodactyloid flying lizard, with a wingspan no larger than three feet (one meter). The pristinely preserved tracks managed to provide anthropologists with a remarkable site to study the landing and take-off behavior of the early birds. They determined that the...
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http://news.softpedia.com/news/Pterosaurs-Preferred-to-Land-on-Prehistoric-039-Runways-039-119585.shtml

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