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Technology Prehistoric Bone Found from One of Largest Animals Ever

20:26  10 april  2018
20:26  10 april  2018 Source:   newsweek.com

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Some of the largest prehistoric animals . Here you will find some information about the largest snake fossil ever found , an enormous frog, a gigantic kangaroo, and more. The bones of this large whale have been dated to 12 or 13 million years ago and in honor of Herman Melville's Moby Dick it

A reconstruction of the giant ichthyosaur.© NOBUMICHI TAMURA A reconstruction of the giant ichthyosaur. A 205 million-year-old prehistoric reptile bone found on a beach in England belongs to "one of the largest animals" that ever lived, according to an international team of researchers.

The jaw bone comes from a giant ichthyosaur that experts estimate may have measured up to a whopping 26 meters (85 feet) long—approaching the size of some blue whales, the largest animal ever known to exist.

Ichthyosaurs are large marine reptiles which roamed the seas during the age of the dinosaurs.

The fossil was found in May 2016 on the coast of Lilstock, Somerset, in the southwest of the country by collector Paul de la Salle, who also co-authored a new study describing the fossil which has been published in the journal PLOS One.

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"Initially, the bone just looked like a piece of rock but, after recognising a groove and bone structure, I thought it might be part of a jaw from an ichthyosaur and immediately contacted ichthyosaur experts Dean Lomax (University of Manchester) and Judy Massare (State University of New York College at Brockport) who expressed interest in studying the specimen,” de la Salle said in a statement.

Massare and Lomax analyzed the bone, finding that it was incomplete and came from the lower jaw of a large ichthyosaur specimen. They also compared it to the previous largest known ichthyosaur specimen which is being kept at the Royal Tyrrell Museum of Palaeontology in Alberta, Canada.

"We compared our jaw bone to that of Shonisaurus sikanniensis, the largest ichthyosaur previously known, with an estimated length of up to 21 m," Massare told Newsweek. "Our bone was about 25% deeper. The estimate assumes that the two animals had a similar shape for this bone, as neither specimen preserves the entire bone."

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Amazing Deinotherium was a prehistoric animal with the fact that this monster was the third largest land animal that ever existed. Archaeologists got a success to find the tooth-spiral and jaw bones and then they reconstructed it with many possible structure to find the idea about the appearance of

Shonisaurus life and skeletal reconstruction.© NOBUMICHI TAMURA & SCOTT HARTMAN Shonisaurus life and skeletal reconstruction. Because the new specimen is only represented a by a large piece of jaw, it is difficult to provide a size estimate, according to Lomax. However, by using a simple scaling factor the researchers estimated that the Lilstock specimen is around 25% larger.

“Other comparisons suggest the Lilstock ichthyosaur was at least 20-25 m (67-82 ft). Of course, such estimates are not entirely realistic because of differences between species,” Lomax added in the statement. “Nonetheless, simple scaling is commonly used to estimate size, especially when comparative material is scarce.”

The jawbone of the giant ichthyosaur.© DEAN LOMAX, THE UNIVERSITY OF MANCHESTER The jawbone of the giant ichthyosaur. In their paper, the researchers also described mysterious bone fragments found in 1850 in the nearby village of Aust, Gloucestershire, which could belong to an even larger ichthyosaur.

"We suggest in the paper that bone fragments from Aust are from the jaw of an ichthyosaur even larger than the one we described," Massare said. "However, the Aust specimens are so fragmentary that a length estimate is not possible."

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