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Scientists say they have discovered remains1 on Britain's Isle2 of Wight that might belong to a meat-eating dinosaur3 larger than any other known from Europe.
The creature was closely related to the biggest carnivorous dinosaur species on record.
Researchers said recently they have found parts of the fossilized bones of the dinosaur. It lived about 125 million years ago during a time known as the Cretaceous Period. The findings include bones of the back, hips4 and tail, but not the skull5 or teeth. Based on the partial remains, they estimated that the dinosaur was more than 10 meters in length and possibly much longer.
Chris Barker was the lead writer of the study that was published in PeerJ Life & Environment.
Barker described the creature's size as "impressive." He added," It is one of the biggest - and possibly the biggest - known land predator6[s] ever" to walk Europe.
Based in part on small marks on the top of the tail, scientists believe that it belonged to a group of dinosaurs7 called spinosaurs. This group included Spinosaurus, which lived about 95 million years ago. At about 15 meters long, it is considered the longest-known dinosaur predator.
Spinosaurs had long heads much like crocodiles with lots of teeth, strong arms, and big claws. They ate water creatures as well as other dinosaurs.
Because the remains are incomplete, the researchers have not yet given the newly described dinosaur a scientific name. For now, they are calling it the "White Rock spinosaurid" based on the layer of rocks where the bones were found. They believe it is not a member of any identified species.
Meat-eating dinosaurs belonged to a group called theropods. Large examples once lived on all major land masses or continents. They walked on two legs and the largest had huge skulls8 and strong teeth.
Spinosaurus was Africa's largest. Tyrannosaurus rex, approaching 13 meters, was North America's king, while the similarly-sized Giganotosaurus ruled in South America and the slightly smaller Tarbosaurus in Asia. The largest-known, identified theropod from Europe was Torvosaurus, at about 10 meters.
The newly described dinosaur might turn out to be as long as T. rex, said Neil Gostling, who was responsible for the study's publication process.
"This one is really big," Gostling said. "Let's hope more fossils turn up. We would love a skull or teeth."
Looking at the teeth could help researchers better understand this dinosaur's position on the development of spinosaurs.
The fossilized bones were found on the surface along Compton Bay on the southwestern coast of the Isle of Wight. At the time, sea levels were much higher than today and large parts of Europe were under water.
The Isle of Wight has become one of Europe's richest places for dinosaur remains. The same team of researchers last year announced the discovery of two other Isle of Wight spinosaurs, both measuring about nine meters in length.
Those finds combined with the latest one support the idea that spinosaurs began and developed in Western Europe before spreading to other places.
Words in This Story
fossilized –adj. changed from living tissue to minerals and rock
species – n. biology : a group of animals or plants that are similar and can produce young animals or plants : a group of related animals or plants that is smaller than a genus
predator – n. an animal that lives by killing9 and eating other animals : an animal that preys10 on other animals
claw – n. a sharp curved part on the toe of an animal (such as a cat or bird)
fossil – n. something (such as a leaf, skeleton, or footprint) that is from a plant or animal which lived in ancient times and that you can see in some rocks
1 remains | |
n.剩余物,残留物;遗体,遗迹 | |
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2 isle | |
n.小岛,岛 | |
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3 dinosaur | |
n.恐龙 | |
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4 hips | |
abbr.high impact polystyrene 高冲击强度聚苯乙烯,耐冲性聚苯乙烯n.臀部( hip的名词复数 );[建筑学]屋脊;臀围(尺寸);臀部…的 | |
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5 skull | |
n.头骨;颅骨 | |
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6 predator | |
n.捕食其它动物的动物;捕食者 | |
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7 dinosaurs | |
n.恐龙( dinosaur的名词复数 );守旧落伍的人,过时落后的东西 | |
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8 skulls | |
颅骨( skull的名词复数 ); 脑袋; 脑子; 脑瓜 | |
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9 killing | |
n.巨额利润;突然赚大钱,发大财 | |
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10 preys | |
v.掠食( prey的第三人称单数 );掠食;折磨;(人)靠欺诈为生 | |
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