f****l
发帖数: 8042 | 1 世界首次发现带毛大型恐龙，特别是恐龙之王，霸王龙。
比较cute的是，这个带毛霸王龙貌似头部还有冠。
http://www.msnbc.msn.com/id/46954385/ns/technology_and_science-
Scientists find the king of the feathered dinosaurs
The discovery of a giant meat-eating dinosaur sporting a downy coat has some
scientists reimagining the look of Tyrannosaurus rex.
With a killer jaw and sharp claws, T. rex has long been depicted in movies
and popular culture as having scaly skin. But the discovery of an earlier
relative suggests the king of dinosaurs may have had a softer side.
More science news from msnbc.com
Did the shroud actually inspire the Gospels?
Science editor Alan Boyle's blog: An art historian contends that the
Shroud of Turin bears the true imprint of Jesus' body, and that displays of
the cloth inspired the Easter story of his resurrection. Skeptics and
believers alike scoff at the idea.
Deadly bacteria lurk in Deepwater Horizon tar balls
Scientists find king of the feathered dinosaurs
Giant panda's complicated sex life revealed
The evidence comes from the unearthing of a new tyrannosaur species in
northeastern China that lived 60 million years before T. rex. The fossil
record preserved remains of fluffy down, making it the largest feathered
dinosaur ever found.
If a T. rex relative had feathers, why not T. rex? Scientists said the
evidence is trending in that direction.
"People need to start changing their image of T. rex," said Luis Chiappe,
director of the Dinosaur Institute at the Natural History Museum of Los
Angeles County, who was not part of the discovery team.
Much smaller dinosaurs with primitive feathers have been excavated in recent
years, but this is the first direct sign of a huge, shaggy dinosaur.
Scientists have long debated whether gigantic dinosaurs lost their feathers
the bigger they got or were just not as extensively covered.
The new tyrannosaur species, Yutyrannus huali, is described in Thursday's
issue of the journal Nature. Its name is a blend of Latin and Mandarin,
which translates to "beautiful feathered tyrant."
A team of Chinese and Canadian scientists analyzed three well-preserved
fossil skeletons — an adult and two juveniles — recovered from a quarry in
China's Liaoning Province by a private fossil dealer. Most striking were
remains of downlike feathers on the neck and arm. Though coverage was patchy
, scientists suspected the species had feathers over much of its body.
It would have felt like touching "long, thick fur," co-author Corwin
Sullivan of the Chinese Academy of Sciences said in an email. Another
scientist, Thomas Holtz Jr. at the University of Maryland, compared it to
the feathers of an emu.
The creature lived about 125 million years ago. Y. huali was 30 feet (9
meters) long and weighed more than a ton. It would have been big enough to
reach T. rex's chest.
Image: Yutyrannus skull
Zang Hailong
The fossilized skull of Yutyrannus was found in China's Liaoning Province, a
hot spot for dinosaur discoveries.
The dino-fuzz probably provided insulation, though paleontologists can't
rule out the possibility that the feathers were also used as camouflage or
could be shown off like a peacock's feathery display for mating.
Since T. rex is related to this newfound feathery species, chances are good
that T. rex was feathered as well, scientists said. Just don't mistake fuzzy
for cuddly. The predatory dinosaur would have been just as menacing.
Having feathers "doesn't make it less threatening or less fearsome," said
Holtz, who had no role in the research.
Matthew Lamanna, assistant curator at the Carnegie Museum of Natural History
, said T. rex most likely was covered in both feathers and scales.
Whatever the coverage of feathers, the latest fossil finds "force us to
conceive of tyrannosauroids in a new way," said Julia Clarke at the
University of Texas at Austin. |
f****l
发帖数: 8042 | 2
some
【在 f****l 的大作中提到】
: 世界首次发现带毛大型恐龙，特别是恐龙之王，霸王龙。
: 比较cute的是，这个带毛霸王龙貌似头部还有冠。
: http://www.msnbc.msn.com/id/46954385/ns/technology_and_science-
: Scientists find the king of the feathered dinosaurs
: The discovery of a giant meat-eating dinosaur sporting a downy coat has some
: scientists reimagining the look of Tyrannosaurus rex.
: With a killer jaw and sharp claws, T. rex has long been depicted in movies
: and popular culture as having scaly skin. But the discovery of an earlier
: relative suggests the king of dinosaurs may have had a softer side.
: More science news from msnbc.com
|
f****l
发帖数: 8042 | |
H*********S
发帖数: 22772 | |
f****l
发帖数: 8042 | 5 砖家难道连草还是毛都分不清？
【在 H*********S 的大作中提到】
: 当年那只霸王龙一头倒在草地上死了，一起变成化石
|
c****h
发帖数: 4968 | |
H*********S
发帖数: 22772 | 7 现在的砖家能分清什么？
【在 f****l 的大作中提到】
: 砖家难道连草还是毛都分不清？
|
c****u
发帖数: 8308 | |
S****e
发帖数: 10596 | 9 长着鸡爪子的超大松鼠
some
【在 f****l 的大作中提到】
: 世界首次发现带毛大型恐龙，特别是恐龙之王，霸王龙。
: 比较cute的是，这个带毛霸王龙貌似头部还有冠。
: http://www.msnbc.msn.com/id/46954385/ns/technology_and_science-
: Scientists find the king of the feathered dinosaurs
: The discovery of a giant meat-eating dinosaur sporting a downy coat has some
: scientists reimagining the look of Tyrannosaurus rex.
: With a killer jaw and sharp claws, T. rex has long been depicted in movies
: and popular culture as having scaly skin. But the discovery of an earlier
: relative suggests the king of dinosaurs may have had a softer side.
: More science news from msnbc.com
|
p******u
发帖数: 14642 | 10 tauntaun!
some
【在 f****l 的大作中提到】
: 世界首次发现带毛大型恐龙，特别是恐龙之王，霸王龙。
: 比较cute的是，这个带毛霸王龙貌似头部还有冠。
: http://www.msnbc.msn.com/id/46954385/ns/technology_and_science-
: Scientists find the king of the feathered dinosaurs
: The discovery of a giant meat-eating dinosaur sporting a downy coat has some
: scientists reimagining the look of Tyrannosaurus rex.
: With a killer jaw and sharp claws, T. rex has long been depicted in movies
: and popular culture as having scaly skin. But the discovery of an earlier
: relative suggests the king of dinosaurs may have had a softer side.
: More science news from msnbc.com
|
|
|
f****l
发帖数: 8042 | 11 看文不仔细，砖家说以前只发现过小型恐龙带毛的，砖家们普遍认为大型恐龙恐怕都是
裸奔。这是第一次发现大型恐龙带毛，特别是恐龙的王者，霸王龙也带毛。
【在 c****u 的大作中提到】
: N年前就说恐龙原来是有毛发的.
|
l*****o
发帖数: 9235 | |
f****l
发帖数: 8042 | 13 看新闻下面，有砖家认为，恐龙没有灭绝，鸟就是恐龙。
【在 l*****o 的大作中提到】
: 恐龙为什么进化出羽毛，气候变冷？
|
r********n
发帖数: 7441 | 14 一看就知道你没见过化石，化石对原物的细节可以保存得非常好，比如树叶的经脉，甚
至更细小如头发丝尺度的东西或结构都可以保留下来，我们小时候经常到附近的小山和
溪流里面玩，那里捡到过很多动植物的化石
现在想起来，那么细小的有机结构也能保存那么完整真是很奇怪，我估计只有在相当长
时间内保持非常干燥的环境下才能够做到这点，否则环境如果利于微生物生长，有机结
构很容易就被分解掉了，不可能保留下来，不知道专业的解释是什么
【在 H*********S 的大作中提到】
: 当年那只霸王龙一头倒在草地上死了，一起变成化石
|
k**o
发帖数: 15334 | 15 是一部分鸟进化成了恐龙吧
【在 l*****o 的大作中提到】
: 恐龙为什么进化出羽毛，气候变冷？
|
l*********1
发帖数: 772 | 16 鸟是恐龙进化来的，这个已经是现在大多数科学家的共识了。 |
c******k
发帖数: 8998 | 17 我记得几年前辽宁也有个令人震惊的恐龙化石出土，最后发现是人造的 |
h******8
发帖数: 3778 | 18 人v5
【在 c******k 的大作中提到】
: 我记得几年前辽宁也有个令人震惊的恐龙化石出土，最后发现是人造的
|
H*********S
发帖数: 22772 | 19 又遇到砖家了
玄的咱们先不说，就看楼猪贴的图，从那张恐龙化石图片中，你帮忙解读一下“细小如
头发丝尺度的东西或结构”，把这只恐龙活着时候的模样栩栩如生展现给大家吧
【在 r********n 的大作中提到】
: 一看就知道你没见过化石，化石对原物的细节可以保存得非常好，比如树叶的经脉，甚
: 至更细小如头发丝尺度的东西或结构都可以保留下来，我们小时候经常到附近的小山和
: 溪流里面玩，那里捡到过很多动植物的化石
: 现在想起来，那么细小的有机结构也能保存那么完整真是很奇怪，我估计只有在相当长
: 时间内保持非常干燥的环境下才能够做到这点，否则环境如果利于微生物生长，有机结
: 构很容易就被分解掉了，不可能保留下来，不知道专业的解释是什么
|
r********n
发帖数: 7441 | 20 你是砖家，我没打算和你抢，我不过说说我自己对化石的第一手材料的直观感受罢了
【在 H*********S 的大作中提到】
: 又遇到砖家了
: 玄的咱们先不说，就看楼猪贴的图，从那张恐龙化石图片中，你帮忙解读一下“细小如
: 头发丝尺度的东西或结构”，把这只恐龙活着时候的模样栩栩如生展现给大家吧
|
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R*********r
发帖数: 1855 | 21 化石保留原来物体的几何形状，不保证保留原有的化学物质。通过石化作用原来的有机
物质逐步被替换为无机物，主要是碳酸钙、二氧化硅等，所以能保存这么长时间。
【在 r********n 的大作中提到】
: 一看就知道你没见过化石，化石对原物的细节可以保存得非常好，比如树叶的经脉，甚
: 至更细小如头发丝尺度的东西或结构都可以保留下来，我们小时候经常到附近的小山和
: 溪流里面玩，那里捡到过很多动植物的化石
: 现在想起来，那么细小的有机结构也能保存那么完整真是很奇怪，我估计只有在相当长
: 时间内保持非常干燥的环境下才能够做到这点，否则环境如果利于微生物生长，有机结
: 构很容易就被分解掉了，不可能保留下来，不知道专业的解释是什么
|
m**d
发帖数: 21441 | 22 这就是大号的鸡啊
some
【在 f****l 的大作中提到】
: 世界首次发现带毛大型恐龙，特别是恐龙之王，霸王龙。
: 比较cute的是，这个带毛霸王龙貌似头部还有冠。
: http://www.msnbc.msn.com/id/46954385/ns/technology_and_science-
: Scientists find the king of the feathered dinosaurs
: The discovery of a giant meat-eating dinosaur sporting a downy coat has some
: scientists reimagining the look of Tyrannosaurus rex.
: With a killer jaw and sharp claws, T. rex has long been depicted in movies
: and popular culture as having scaly skin. But the discovery of an earlier
: relative suggests the king of dinosaurs may have had a softer side.
: More science news from msnbc.com
|
s******s
发帖数: 13035 | 23 老美考古的有时候直接就说鸟是一种恐龙了
【在 l*********1 的大作中提到】
: 鸟是恐龙进化来的，这个已经是现在大多数科学家的共识了。
|
o********e
发帖数: 34 | 24 鸟和恐龙的亲缘最近，但以前知识认为鸟并不是恐龙进化来的 而是和恐龙有一个共同
祖先 ，恐龙的后裔都灭绝了。
【在 l*********1 的大作中提到】
: 鸟是恐龙进化来的，这个已经是现在大多数科学家的共识了。
|
e**s
发帖数: 4638 | |
f****l
发帖数: 8042 | 26 那这是多么大的一锅鸡汤啊。
【在 e**s 的大作中提到】
: 进化成鸡啦 ～～～～～～～～～～lol
|
f****y
发帖数: 7425 | 27 肉太柴，没法吃
【在 f****l 的大作中提到】
: 那这是多么大的一锅鸡汤啊。
|
