File:Allosaurus atrox.jpg
原始文件 （2,462 × 1,633像素，文件大小：1.89 MB，MIME类型：image/jpeg）
摘要
| 描述 |
Allosaurus atrox (Marsh, 1878) theropod dinosaur (cast) from the Jurassic of Utah, USA (public display, South Australian Museum, Adelaide, South Australia). The most famous Jurassic-aged theropod is Allosaurus. It’s smaller than its Late Cretaceous relative Tyrannosaurus, but was still a top predator. The species Allosaurus atrox (Marsh, 1878) is well known from numerous individuals found in the Morrison Formation (Upper Jurassic) at the famous Cleveland-Lloyd Quarry in Utah, USA. Allosaurus atrox is only known from the Late Jurassic of western America. Stratigraphy: Morrison Formation, Tithonian Stage, upper Upper Jurassic Locality: Cleveland-Lloyd Quarry, northern Emery County, east-central Utah, USA Theropod were small to large, bipedal dinosaurs. Almost all known members of the group were carnivorous (predators and/or scavengers). They represent the ancestral group to the birds, and some theropods are known to have had feathers. Some of the most well known dinosaurs to the general public are theropods, such as Tyrannosaurus, Allosaurus, and Spinosaurus. |
| 日期 | |
| 来源 | Allosaurus atrox theropod dinosaur (Morris Formation, Upper Jurassic; Cleveland-Lloyd Quarry, northern Emery County, east-central Utah, USA) 1 |
| 作者 | James St. John |
许可协议
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这幅图片原始出处为Flickr的https://www.flickr.com/photos/47445767@N05/15375587115 ，作者为jsj1771 。经机器人FlickreviewR在2014年9月29日审查后确定为采用cc-by-2.0的协议授权使用。 |
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| 日期/时间 | 缩略图 | 大小 | 用户 | 备注 | |
|---|---|---|---|---|---|
| 当前 | 2014年9月29日 (一) 12:54 | | 2,462 × 1,633（1.89 MB） | Cropbot | upload cropped version, operated by User:FunkMonk. Summary: cropped |
| 2014年9月29日 (一) 12:36 |  | 2,476 × 1,675（1.7 MB） | FunkMonk | Transferred from Flickr via Flickr2commons |
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