-
(单词翻译:双击或拖选)
Rocky Mountain museum is creating its own Jurassic adventure bone by bone
Joseph Mok | Washington, DC 07 December 2009
Dinosaur1 researchers have made giant strides in recent years, however they know that the vast majority of dinosaur specimens3 have yet to be discovered
The gigantic brachiosaurus … the fierce and deadly tyrannosaurus … the fast and nimble velociraptor.
There are more than 1,000 known types of dinosaurs4, with an estimated 2,000 more yet to be discovered, according to paleontologists - dinosaur experts. We visit the nation's capital to learn more about the giant creatures that populated the earth millions of years ago.
The U.S. state of Colorado is an ideal destination for anyone interested in hunting for dinosaur fossils. Like Wyoming, its neighbor to the north, Colorado has its own facility devoted5 to restoring dinosaurs to their original form, the Rocky Mountain Dinosaur Resource Center.
"What we are trying to do is to present an incomplete specimen2 in a complete way. Because if you just have random6 bones lying around, it's hard for someone to come in and look at it and understand what the animal looked like in its entirety. And, by filling in the blanks, they see the real material that [has] been used in the reconstruction7, but they also see what the animal looks like in its entirety." Anthony Maltese, curator of the center said.
The Colorado center restores about four to five dinosaur specimens every year. To ensure accuracy, it uses the actual fossilized skeletal bones to the greatest extent possible when constructing the model. But sometimes the restorers have to use silicone to fill in for the real thing. However, occasionally even they are stumped8, and when that happens they have to consult other experts, many of whom are found at the Smithsonian Museum of Natural History in Washington, D.C.
Since the 19th century it has systematically9 collected all varieties of fossilized skeletons. The museum not only has a display area open to the public, but also has an archival collection of more than one million specimens taking up three floors. Matthew Carrano is curator of dinosaur exhibitions at the Smithsonian.
"We are a national museum, but also an international museum. Everybody really tries to come to Washington once in their lives if they live in the country. But we also get many, many thousands of (international) tourists as well," Carrano said. "It is very important to us that in our exhibition halls we reflect not just the local character of what we have but the international characters."
When he is not planning the displays, curator Carrano does his own scientific research. His latest study is this skull10 bone of ceratosaurus , a large predatory dinosaur. "Our ceratosaurus is a unique specimen. It is the original specimen of ceratosaurus, the very first one that was found," he explained. "The one that led paleontologist Othniel Marsh11 to create the name ceratosaurus."
"It's a meat-eating dinosaur. It would have lived in the Late Jurassic period about a 140, 150 million years ago. For more than a hundred years, it was the only specimen ever discovered of this dinosaur. Everyone who knew about paleontology knew about this specimen because it was the only one. In the last 20 or 30 years there have been a couple more specimens. But it's a very, very rare dinosaur," Marsh said.
Though dinosaur researchers have made giant strides in recent years, they know they have much more to learn. After all, they believe that the vast majority of dinosaur specimens have yet to be discovered.
1 dinosaur | |
n.恐龙 | |
参考例句: |
|
|
2 specimen | |
n.样本,标本 | |
参考例句: |
|
|
3 specimens | |
n.样品( specimen的名词复数 );范例;(化验的)抽样;某种类型的人 | |
参考例句: |
|
|
4 dinosaurs | |
n.恐龙( dinosaur的名词复数 );守旧落伍的人,过时落后的东西 | |
参考例句: |
|
|
5 devoted | |
adj.忠诚的,忠实的,热心的,献身于...的 | |
参考例句: |
|
|
6 random | |
adj.随机的;任意的;n.偶然的(或随便的)行动 | |
参考例句: |
|
|
7 reconstruction | |
n.重建,再现,复原 | |
参考例句: |
|
|
8 stumped | |
僵直地行走,跺步行走( stump的过去式和过去分词 ); 把(某人)难住; 使为难; (选举前)在某一地区作政治性巡回演说 | |
参考例句: |
|
|
9 systematically | |
adv.有系统地 | |
参考例句: |
|
|
10 skull | |
n.头骨;颅骨 | |
参考例句: |
|
|
11 marsh | |
n.沼泽,湿地 | |
参考例句: |
|
|