www射-国产免费一级-欧美福利-亚洲成人福利-成人一区在线观看-亚州成人

USEUROPEAFRICAASIA 中文雙語Fran?ais
China
Home / China / Top Stories

Tail of feathered dinosaur found in chunk of amber

By Reuters in Washington | China Daily | Updated: 2016-12-10 07:05

Around 99 million years ago, a juvenile dinosaur got its feathery tail stuck in tree resin, a death trap for the small creature. But its misfortune is now giving scientists unique insight into feathered dinosaurs that prospered during the Cretaceous Period.

Researchers said on Thursday that a chunk of amber - fossilized resin - spotted by a Chinese scientist in a market in Myitkyina, Myanmar, last year contained 36 millimeters of the tail of the dinosaur, complete with bones, flesh, skin and feathers.

The dinosaur itself was no more than 15 centimeters long, about the size of a sparrow.

"This is the first of its kind," said paleontologist Ryan McKellar of the Royal Saskatchewan Museum in Canada, one of the researchers involved in the study published in the journal Current Biology. "I'm blown away."

The scientists suspect the tail belonged to a type of two-legged, birdlike dinosaur called a maniraptora, one of several groups of dinosaurs that had feathers.

Birds, which first appeared about 150 million years ago during the Jurassic Period, evolved from small, feathered dinosaurs.

The researchers used sophisticated scanning and microscopic observations to study the tail. They determined it boasted a chestnut-brown upper surface, with a pale or white underside, a pattern known as countershading.

"We're seeing feathers still attached to the tail, and we can see how they attach, the shapes that they have down to the micrometer scale, and things like pigment patterns within the feathers," McKellar said.

The tail consisted of eight vertebrae, soft tissue and feathers exquisitely preserved in three dimensions.

Tail of feathered dinosaur found in chunk of amber

A chunk of amber shows the tip of a preserved tail of a two-legged, birdlike feathered dinosaur. Reuters

Editor's picks
Copyright 1995 - . All rights reserved. The content (including but not limited to text, photo, multimedia information, etc) published in this site belongs to China Daily Information Co (CDIC). Without written authorization from CDIC, such content shall not be republished or used in any form. Note: Browsers with 1024*768 or higher resolution are suggested for this site.
License for publishing multimedia online 0108263

Registration Number: 130349
FOLLOW US
主站蜘蛛池模板: 亚洲综合色在线观看 | 色午夜在线 | 高清偷自拍第1页 | 9久久99久久久精品齐齐综合色圆 | wwwwwww黄| 新版天堂资源中文在线 | 国产成人教育视频在线观看 | 亚洲精品亚洲人成人网 | 成人自拍在线 | 在线观看自拍视频 | 成人亚洲国产精品久久 | 亚洲日本高清成人aⅴ片 | 免费观看欧美精品成人毛片能看的 | 欧美日韩高清性色生活片 | 深爱五月开心网亚洲综合 | 欧美精品伊人久久 | 黄色三级网络 | 女人张开双腿让男人桶完整 | 成人毛片国产a | 看欧美的一级毛片 | 成人国产精品视频频 | 国产福利不卡一区二区三区 | 三级视频网站在线观看 | 一级成人毛片免费观看欧美 | 国产日韩精品视频 | 91大神在线精品视频一区 | 久热草在线 | 老司机午夜性生免费福利 | 久久高清一级毛片 | 亚洲精品社区 | 九九综合视频 | 国内精品免费一区二区三区 | 二区国产 | 日韩精品999 | 国产肥老妇视频一 | 成人精品在线 | 成人深夜福利在线播放不卡 | 特黄aa级毛片免费视频播放 | 免费的毛片 | 女人张开腿让男人添 | 精品日韩一区二区三区 |