跳转到内容

File:B-rex skull.jpg

页面内容不支持其他语言。
这个文件来自维基共享资源
维基百科,自由的百科全书

原始文件 (2,500 × 2,236像素,文件大小:4.59 MB,MIME类型:image/jpeg


摘要

描述
English: A young adult Tyrannosaurus rex skull on display in the ontogeny exhibit at the Museum of the Rockies in Bozeman, Montana.

This fossil was found in 2000 in the Charles M. Russell National Wildlife Refuge in Garfield County, Montana.

Nicknamed "B-Rex" for its discoverer, paleontological preparer Bob Harmon, this fossil is famous for containing partially-fossilized soft tissue in its femur -- allowing scientists to study, for the first time ever, the actual DNA structure of dinosaurs. In 2016, paleontologists announced that they had found medullary bone -- which means the B-Rex was a female, and egg-producing.

Ontogeny means "the study of a species as it changes during its growth and life." Many animals not only grow larger, but change shape and add or lose features as they grow older. When it comes to fossils, it's easy to think that a juvenile is a different species. The study of ontogeny is also important because it helps us understand animals as they grow older, and what diseases, problems, or changes their bodies underwent at adults and in old age.

Tyrannosaurs lived from 68 to 66 million years ago. T. rex was the last of the tyrannosaurids (bipedal predators with large skulls and miniscule forearms). On average, a T. rex was about 40 feet in length, 13 feet tall at the hips, and weighed 10.5 tons.
日期
来源 https://www.flickr.com/photos/timevanson/27026025523/
作者 Tim Evanson

许可协议

This image was originally posted to Flickr. Its license was verified as "cc-by-sa-2.0" by the UploadWizard Extension at the time it was transferred to Commons. See the license information for further details.
w:zh:知识共享
署名 相同方式共享
本文件采用知识共享署名-相同方式共享 2.0 通用许可协议授权。
您可以自由地:
  • 共享 – 复制、发行并传播本作品
  • 修改 – 改编作品
惟须遵守下列条件:
  • 署名 – 您必须对作品进行署名,提供授权条款的链接,并说明是否对原始内容进行了更改。您可以用任何合理的方式来署名,但不得以任何方式表明许可人认可您或您的使用。
  • 相同方式共享 – 如果您再混合、转换或者基于本作品进行创作,您必须以与原先许可协议相同或相兼容的许可协议分发您贡献的作品。

说明

添加一行文字以描述该文件所表现的内容

此文件中描述的项目

描绘内容

尼康D7100 中文(已转写)

0.05

24 毫米

image/jpeg

19a6f8f30c7ed70bf8b8b42f11d1ff7e926693ff

4,812,039 字节

2,236 像素

2,500 像素

文件历史

点击某个日期/时间查看对应时刻的文件。

日期/时间缩⁠略⁠图大小用户备注
当前2017年3月30日 (四) 17:332017年3月30日 (四) 17:33版本的缩略图2,500 × 2,236(4.59 MB)FunkMonkUser created page with UploadWizard

以下页面使用本文件:

全域文件用途

以下其他wiki使用此文件:

元数据