File:Spermophilus richardsonii (fossil ground squirrel).jpg
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Summary
[edit]DescriptionSpermophilus richardsonii (fossil ground squirrel).jpg |
English: Spermophilus richardsonii (Sabine, 1822) - fossil ground squirrel skeleton from the Pleistocene of Nebraska, USA. (Nebraska State Museum of Natural History, Lincoln, Nebraska, USA)
This species is also known as Urocitellus richardsonii. From museum signage: "Ice Age ground squirrel which died in its burrow Dundy County 10,500 years old (Pleistocene) This is one of the youngest fossils in our collection. To be considered a fossil, a specimen must be at least 10,000 years old. Carbon-14 dates on this specimen barely exceed this. The skeleton is similar to that of living Richardson's ground squirrels living in the Rocky Mountains and northern Great Plains today. " Classification: Animalia, Chordata, Vertebrata, Mammalia, Rodentia, Sciuridae Locality: unrecorded/undisclosed site in Dundy County, southwestern Nebraska, USA See info. at: en.wikipedia.org/wiki/Richardson's_ground_squirrel |
Date | |
Source | https://www.flickr.com/photos/jsjgeology/31566450184/ |
Author | James St. John |
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current | 09:25, 20 January 2017 | ![]() | 2,205 × 1,764 (2.66 MB) | FunkMonk (talk | contribs) | User created page with UploadWizard |
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Camera manufacturer | Canon |
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Camera model | Canon PowerShot D10 |
Exposure time | 1/8 sec (0.125) |
F-number | f/4.9 |
ISO speed rating | 320 |
Date and time of data generation | 13:26, 18 July 2011 |
Lens focal length | 18.6 mm |
Image title | |
Width | 4,000 px |
Height | 3,000 px |
Bits per component |
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Pixel composition | RGB |
Orientation | Normal |
Number of components | 3 |
Horizontal resolution | 180 dpi |
Vertical resolution | 180 dpi |
Software used | Adobe Photoshop Elements 13.0 (Macintosh) |
File change date and time | 15:15, 19 January 2017 |
Y and C positioning | Co-sited |
Exif version | 2.21 |
Date and time of digitizing | 13:26, 18 July 2011 |
Meaning of each component |
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Image compression mode | 3 |
APEX shutter speed | 3 |
APEX aperture | 4.59375 |
APEX exposure bias | 0 |
Maximum land aperture | 4.59375 APEX (f/4.91) |
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 |
Lens used | 6.2-18.6 mm |
Date metadata was last modified | 10:15, 19 January 2017 |
Unique ID of original document | 35979A29A4C909816EBC63E9019848E9 |