File:Allosaurus atrox (theropod dinosaur) (Morrison Formation, Upper Jurassic; Carnegie Quarry, Dinosaur National Monument, Utah, USA) 1 (48692087322).jpg
Original file (3,475 × 2,322 pixels, file size: 6.41 MB, MIME type: image/jpeg)
Captions
Summary
[edit]DescriptionAllosaurus atrox (theropod dinosaur) (Morrison Formation, Upper Jurassic; Carnegie Quarry, Dinosaur National Monument, Utah, USA) 1 (48692087322).jpg |
Allosaurus atrox (Marsh, 1878) - theropod dinosaur skull from the Jurassic of Utah, USA. (DNM 2560, Dinosaur National Monument, Utah, USA) This specimen has also been referred to Allosaurus fragilis. 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. 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 is known from numerous individuals found in the Morrison Formation. The species is only known from the Late Jurassic of western America. From exhibit signage: This large Allosaurus skull is one of the best-preserved skulls ever discovered. Although made of thin and delicate bones, this skull is uncrushed. Buried for millions of years, the skull is only minimally distorted. A team from the University of Utah discovered this skull here at the Carnegie Quarry in 1924. Classification: Animalia, Chordata, Vertebrata, Dinosauria, Saurischia, Theropoda, Allosauridae Stratigraphy: Carnegie Quarry Sandstone, Brushy Basin Member, Morrison Formation, Kimmeridgian Stage, Upper Jurassic, ~150 to 156 Ma Locality: Carnegie Quarry, Dinosaur National Monument, northern Uintah County, northeastern Utah, USA See info. at: <a href="https://en.wikipedia.org/wiki/Allosaurus" rel="noreferrer nofollow">en.wikipedia.org/wiki/Allosaurus</a> and <a href="https://en.wikipedia.org/wiki/Theropoda" rel="noreferrer nofollow">en.wikipedia.org/wiki/Theropoda</a> and <a href="https://en.wikipedia.org/wiki/Dinosaur_National_Monument" rel="noreferrer nofollow">en.wikipedia.org/wiki/Dinosaur_National_Monument</a> |
Date | |
Source | Allosaurus atrox (theropod dinosaur) (Morrison Formation, Upper Jurassic; Carnegie Quarry, Dinosaur National Monument, Utah, USA) 1 |
Author | James St. John |
Licensing
[edit]- You are free:
- to share – to copy, distribute and transmit the work
- to remix – to adapt the work
- Under the following conditions:
- attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
This image was originally posted to Flickr by James St. John at https://flickr.com/photos/47445767@N05/48692087322 (archive). It was reviewed on 8 October 2019 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
8 October 2019
File history
Click on a date/time to view the file as it appeared at that time.
Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 00:35, 8 October 2019 | 3,475 × 2,322 (6.41 MB) | Ser Amantio di Nicolao (talk | contribs) | Transferred from Flickr via #flickr2commons |
You cannot overwrite this file.
File usage on Commons
There are no pages that use this file.
Metadata
This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.
Camera manufacturer | NIKON CORPORATION |
---|---|
Camera model | NIKON D90 |
Exposure time | 1/60 sec (0.016666666666667) |
F-number | f/4.5 |
ISO speed rating | 200 |
Date and time of data generation | 19:26, 9 June 2013 |
Lens focal length | 35 mm |
Width | 4,288 px |
Height | 2,848 px |
Bits per component |
|
Pixel composition | RGB |
Orientation | Normal |
Number of components | 3 |
Horizontal resolution | 300 dpi |
Vertical resolution | 300 dpi |
Software used | Adobe Photoshop Elements 16.0 (Macintosh) |
File change date and time | 02:20, 7 September 2019 |
Y and C positioning | Co-sited |
Exposure Program | Not defined |
Exif version | 2.21 |
Date and time of digitizing | 19:26, 9 June 2013 |
Meaning of each component |
|
Image compression mode | 4 |
APEX shutter speed | 5.906891 |
APEX aperture | 4.33985 |
APEX exposure bias | 0 |
Maximum land aperture | 4.3 APEX (f/4.44) |
Metering mode | Pattern |
Light source | Unknown |
Flash | Flash fired, strobe return light detected, auto mode |
DateTime subseconds | 00 |
DateTimeOriginal subseconds | 00 |
DateTimeDigitized subseconds | 00 |
Supported Flashpix version | 1 |
Color space | sRGB |
Sensing method | One-chip color area sensor |
File source | Digital still camera |
Scene type | A directly photographed image |
Custom image processing | Normal process |
Exposure mode | Auto exposure |
White balance | Auto white balance |
Digital zoom ratio | 1 |
Focal length in 35 mm film | 52 mm |
Scene capture type | Standard |
Scene control | None |
Contrast | Normal |
Saturation | Normal |
Sharpness | Normal |
Subject distance range | Unknown |
GPS tag version | 2.2.0.0 |
Serial number of camera | 3562538 |
Lens used | TAMRON AF 18-270mm F3.5-6.3 Di II VC PZD B008N |
Date metadata was last modified | 22:20, 6 September 2019 |
Unique ID of original document | 34FC25F9416687A29424EFFC81BDD546 |