File:Allosaurus atrox.jpg
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Summary
| Description |
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. |
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| Source | Allosaurus atrox theropod dinosaur (Morris Formation, Upper Jurassic; Cleveland-Lloyd Quarry, northern Emery County, east-central Utah, USA) 1 |
| Author | James St. John |
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This image was originally posted to Flickr by jsj1771 at https://www.flickr.com/photos/47445767@N05/15375587115. It was reviewed on 29 September 2014 by FlickreviewR and was confirmed to be licensed under the terms of the cc-by-2.0. |
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| Date/Time | Dimensions | User | Comment | |
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| current | 05:54, 29 September 2014 | 2,462 × 1,633 (1.89 MB) | Cropbot | upload cropped version, operated by User:FunkMonk. Summary: cropped |
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