File:Stegosaurus dinosaur track (Morrison Formation, Upper Jurassic; Colorado, USA) (15354795450).jpg
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Summary
[edit]DescriptionStegosaurus dinosaur track (Morrison Formation, Upper Jurassic; Colorado, USA) (15354795450).jpg |
Stegosaurus dinosaur footprint, preserved as a convex hyporelief in sandstone from the Upper Jurassic Morrison Formation of Colorado, USA (public display, Morrison Natural History Museum, Morrison, Colorado, USA). Trace fossils are any indirect evidence of ancient life. They refer to features in rocks that do not represent parts of the body of a once-living organism. Traces include footprints, tracks, trails, burrows, borings, and bitemarks. Body fossils provide information about the morphology of ancient organisms, while trace fossils provide information about the behavior of ancient life forms. Interpreting trace fossils and determination of the identity of a trace maker can be straightforward (for example, a dinosaur footprint represents walking behavior) or not. Sediments that have trace fossils are said to be bioturbated. Burrowed textures in sedimentary rocks are referred to as bioturbation. Trace fossils have scientific names assigned to them, in the same style & manner as living organisms or body fossils. |
Date | |
Source | Stegosaurus dinosaur track (Morrison Formation, Upper Jurassic; Colorado, USA) |
Author | James St. John |
Licensing
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This image was originally posted to Flickr by James St. John at https://flickr.com/photos/47445767@N05/15354795450. It was reviewed on 6 December 2019 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
6 December 2019
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 03:57, 6 December 2019 | 4,000 × 3,000 (3.98 MB) | Ser Amantio di Nicolao (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 | 1/20 sec (0.05) |
F-number | f/3.5 |
ISO speed rating | 320 |
Date and time of data generation | 11:13, 4 November 2010 |
Lens focal length | 9.681 mm |
Orientation | Normal |
Horizontal resolution | 180 dpi |
Vertical resolution | 180 dpi |
Software used | Adobe Photoshop CS2 Macintosh |
File change date and time | 02:28, 15 October 2014 |
Y and C positioning | Co-sited |
Exif version | 2.21 |
Date and time of digitizing | 11:13, 4 November 2010 |
Meaning of each component |
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Image compression mode | 3 |
APEX shutter speed | 4.3125 |
APEX aperture | 3.625 |
APEX exposure bias | 0 |
Maximum land aperture | 3.625 APEX (f/3.51) |
Metering mode | Pattern |
Flash | Flash did not fire, compulsory flash suppression |
Supported Flashpix version | 1 |
Color space | sRGB |
Focal plane X resolution | 16,460.905349794 |
Focal plane Y resolution | 16,483.516483516 |
Focal plane resolution unit | inches |
Sensing method | One-chip color area sensor |
File source | Digital still camera |
Custom image processing | Normal process |
Exposure mode | Auto exposure |
White balance | Auto white balance |
Digital zoom ratio | 1 |
Scene capture type | Standard |
Supported Flashpix version | 1 |
Image width | 4,000 px |
Image height | 3,000 px |
Date metadata was last modified | 22:28, 14 October 2014 |
IIM version | 2 |