Posted on 11/29/2007 9:56:32 AM PST by blam
November 29, 2007
Dinosaur graveyard may unearth new reasons for their extinction
Thomas Catᮠin Madrid
Spanish scientists have unearthed what could be Europe’s largest dinosaur boneyard, finding the remains of 65ft plant-eaters never before discovered on the continent. The palaeontologists believe they have found eight different species amid the 8,000 fossils discovered so far.
The range of species they are finding at the 80 million-year-old site and their state of conservation is virtually unparalleled in Europe and challenges long-held beliefs about the way in which dinosaurs became extinct.
“This is completely beyond what we expected to find,” Francisco Ortega, co-director of the excavation, told The Times. “This represents a huge leap in our understanding of the Upper Cretaceous (period).”
Dozens of experts are working around the clock to excavate the site. It was discovered in June during construction work for a new high-speed rail link between Madrid and Valencia. Palaeontologists, who kept the discovery under wraps, have until the end of the month to remove the skeletons of several hundred dinosaurs before the diggers move back in.
Researchers have not finished excavating the entire area of Lo Hueco, near the city of Cuenca, in western Spain. But they say they have retrieved most of the fossils from the path of the railway.
The find is from a period palaeontologists have little information on in Europe. Most of the sites dating from that period have been found in the Americas.
Scientists had long believed that the diversity of dinosaurs declined sharply as they approached the end of their time on earth. Palaeontologists working in Lo Hueco, though, have been amazed to find a wide variety of dinosaurs from the period.
“Everything indicates that the dino-sours were enjoying great evolutionary vigour when they suddenly disappeared,” said José Luis Sanz, the co-director of the dig.
Mr Ortega said the find should help shed light on the extinction of the dinosaurs in Europe and whether they also died out as a result of the huge meteorite that struck modern-day Mexico. The different species found include three, perhaps four, different types of Titanosaurus – huge, long-necked creatures that munched on plants and walked on four thick legs. More than 100 individual Titanosaurus have been found at the site, some of them with thick armour plating on their backs, a feature not previously seen in Europe.
Many dinosaur skeletons that are nearly intact have also been unearthed.“We have found very complete individuals (dinosaurs) and skull fragments” from Titanosaurus, said Mr Ortega.Other dinosaurs found are believed to include Struthiosaurus, a small, armoured, quadrupedal, plant-eating dinosaur.
Until now, only incomplete fossils had been found in Austria and Roma-nia. Researchers also believe they have found two or three types of Dromaeosaurus – small, fast-moving predators with sharp teeth and deadly, sickle-like claws. They have also found a Rhabdodon, a small, two-legged plant-eater with a long tail, short neck and a bulky body.
Researchers also say there is wealth of other plant and animal species at the site that could provide a treasure trove of information about one of Europe’s least-understood periods. They must still sift through 20,000kg of sediment and say they can expect to find dozens of other smaller species. “This is the equivalent of 80 to 100 times the size of a normal excavation in terms of time and money,” Mr Ortega said.
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Hmmm. Reminds me of the old legend of the ‘Elephant’s Graveyard” where old elephants went to die.
The question is why did all these dinos come to this spot to die. Perhaps they were herded there by mammoths?
(haven’t seen a mammoth story lately so I thought I’d prompt something.)
I have to pull that, because of a copyright complaint by Gary Larson.
No way. The mammoths were able to travel much further, because they had trunks...
How an 80-million-year-old site is going to solve the mystery of something that happened 15 million years later is beyond me. Would exploring a 15-million year-old graveyard help us understand why the mammoths or the dodos became extinct?
There actually still is a remnant of this species still with us today. His name is Teddy and he is a democRAT senator from Massachusetts. If his upcoming book is worth anything we will have a chance to see how he was able to get away with the murder of a young woman early in his career. Don’t hold your breath.
Absolutely not.
You are correct.
The dinosaurs are extinct because they smoked, drove while drinking, and tried to pick up skinhead’s women.
Sweet and Sour-Dino
“The mammoths were able to travel much further, because they had trunks...”
BA DA BOOM! LOL
Well, too bad for the Evolutionary Theory that separating animals over great distances (like continents!) would cause differences in species...
I must have missed something. The railway is running from Madrid, which is in the middle of Spain, to Valencia, which is on the east coast, but the dinosaur graveyard is in the west. How is it getting in the way of construction?
For over 100 years, the Ries structure was considered to be a volcanic crater, but as we'll see on our tour, the evidence for an impact origin is overwhelming. The foundations for the reinterpretation of Ries as a meteorite impact crater came from the discovery of coesite and stishovite, high-pressure versions of quartz, by Eugene Shoemaker and Edward Chao in the 1960's.
Stratigraphically speaking, you put up a good graphic with that cross section. Any exterrestrial metallica discovered in that crater?
Thanks for the ping!
Spanish Craters (in German.)
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