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Last Updated: Thursday, 27 April 2006, 15:13 GMT 16:13 UK
North Sea fossil is deepest dino
Plateosaurus specimen  Image: Jorn Harald Hurum
To find a dinosaur at this depth is remarkable (Image: Jorn Harald Hurum)
The first dinosaur fossil discovered in Norway is also the deepest one that has been found anywhere in the world.

The 195-210-million-year-old specimen was found 2.3km (1.4 miles) below the floor of the North Sea by an offshore oil drilling platform.

Norwegian palaeontologist Jorn Harald Hurum, from the University of Oslo, identified the fossil as the knucklebone of a plateosaur.

Details of the discovery are to appear in the Norwegian Journal of Geology.

We knew there was food there, so something must have been eating it. But we didn't know what animals were there
Jorn Harald Hurum, University of Oslo
"It's the first time a dinosaur bone has ever been found in such a deep core," Dr Hurum told the BBC News website.

Marine reptile fossils have been found in some previous North Sea drill cores, but to find a terrestrial animal at such a depth is rare.

"To drill through a terrestrial animal is much rarer because there are so many more marine sediments there," Dr Hurum, assistant professor of vertebrate palaeontology at Oslo's Natural History Museum, explained.

The crushed knucklebone was identified in a long cylinder of rock drilled out from an exploration well at Norway's Snorre offshore field.

Enigmatic specimen

The geologists who drilled the core spotted the curious specimen in 1997; but they were discouraged by colleagues who thought it was plant matter and tucked it away in a drawer.

Only in 2003 did they pass the specimen to Hurum, who thought it looked like a dinosaur.

Reconstruction of Plateosaurus   Image: BBC
Plateosaurus fossils are known from across Europe
After consulting palaeontologists at the University of Bonn in Germany, a microscopic examination of the specimen showed it to be identical in structure to bones from a Plateosaurus species.

This dinosaur is the most common type found in Europe. At the time it lived, there was a desert between Norway and Greenland crossed by meandering rivers.

"We knew there was food there, so something must have been eating it; but we didn't know what animals were there," Dr Hurum said.

Dr Hurum describes himself as Norway's only dinosaur researcher. Successive ice ages have eroded dinosaur-bearing rocks in mainland Norway.

But the scientist thinks fossils could be found on the northern island of Spitsbergen.




SEE ALSO:
Dino may have been pack hunter
18 Apr 06 |  Science/Nature
'Jurassic beaver' found in China
24 Feb 06 |  Science/Nature
Dino discovery 'overturns wisdom'
16 Dec 05 |  Science/Nature


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