File:Theropod dinosaur footprint in sandstone (Kayenta Formation or Navajo Sandstone, Lower Jurassic; Potash-Poison Spider dinosaur tracksite, Williams Bottom, west of Moab, Utah, USA) 32 (32809017400).jpg
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[edit]DescriptionTheropod dinosaur footprint in sandstone (Kayenta Formation or Navajo Sandstone, Lower Jurassic; Potash-Poison Spider dinosaur tracksite, Williams Bottom, west of Moab, Utah, USA) 32 (32809017400).jpg |
Dinosaur footprint in sandstone in the Jurassic of Utah, USA. This is the top of a sandstone bed with a decent-sized, three-toed dinosaur footprint. Trace fossils that are indented at the top of a bed are known as concave epirelief. The dinosaur that produced the track was a theropod, which were medium-sized to very large, bipedal, carnivorous (predatory) dinosaurs. Stratigraphy: talus block derived from the Kayenta Formation or the Navajo Sandstone, Lower Jurassic Locality: talus block on slope of Kayenta Formation, Potash Road/Poison Spider Dinosaur Tracksite, just north of the Poison Spider Trailhead parking lot, adjacent to Williams Bottom along the Colorado River, next to Potash Road (Rt. 279), southwest of the town of Moab, southern Grand County, eastern Utah, USA (vicinity of 38° 32' 01.09" North latitude, 109° 36' 29.92" West longitude) |
Date | |
Source | Theropod dinosaur footprint in sandstone (Kayenta Formation or Navajo Sandstone, Lower Jurassic; Potash-Poison Spider dinosaur tracksite, Williams Bottom, west of Moab, Utah, USA) 32 |
Author | James St. John |
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This image was originally posted to Flickr by James St. John at https://flickr.com/photos/47445767@N05/32809017400. It was reviewed on 2 December 2018 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
2 December 2018
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current | 07:39, 2 December 2018 | 4,000 × 3,000 (6.72 MB) | Rudolphous (talk | contribs) | Transferred from Flickr via #flickr2commons |
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Camera manufacturer | Canon |
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Camera model | Canon PowerShot D10 |
Exposure time | 1/100 sec (0.01) |
F-number | f/8 |
ISO speed rating | 80 |
Date and time of data generation | 15:08, 11 May 2014 |
Lens focal length | 6.2 mm |
Orientation | Normal |
Horizontal resolution | 180 dpi |
Vertical resolution | 180 dpi |
Software used | Adobe Photoshop CS2 Macintosh |
File change date and time | 12:40, 1 March 2017 |
Exif version | 2.21 |
Date and time of digitizing | 15:08, 11 May 2014 |
Image compression mode | 3 |
APEX shutter speed | 6.65625 |
APEX aperture | 6 |
APEX exposure bias | 0 |
Maximum land aperture | 2.96875 APEX (f/2.8) |
Metering mode | Pattern |
Flash | Flash did not fire, auto mode |
Supported Flashpix version | 1 |
Color space | sRGB |
Focal plane X resolution | 16,460.90625 |
Focal plane Y resolution | 16,483.516129032 |
Focal plane resolution unit | inches |
Sensing method | One-chip color area sensor |
Custom image processing | Normal process |
Exposure mode | Auto exposure |
White balance | Auto white balance |
Digital zoom ratio | 1 |
Scene capture type | Portrait |
Supported Flashpix version | 1 |
Image width | 4,000 px |
Image height | 3,000 px |
Date metadata was last modified | 07:40, 1 March 2017 |