File:Campodus variabilis tooth.jpg
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Summary[edit]
DescriptionCampodus variabilis tooth.jpg |
English: Campodus variabilis (Newberry & Worthen, 1870) - fossil shark teeth from the Late Pennsylvanian of Nebraska, USA. (public display, Nebraska State Museum of Natural History, Lincoln, Nebraska, USA)
This species is also known as Agassizodus variabilis. Some Late Paleozoic sharks were remarkable in having tooth whorls or spirals (see especially Helicoprion - www.flickr.com/photos/jsjgeology/15336310205). From museum signage: "Tooth spiral from an extinct shell-crushing shark. Unlike modern sharks, Campodus and its relatives bit with large teeth at the front rather than the sides of the jaws." Classification: Animalia, Chordata, Vertebrata, Chondrichthyes, Eugeneodontidae, Helicoprionidae/Agassizodontidae Locality: unrecorded/undisclosed site in Cass County, southeastern Nebraska, USA |
Date | |
Source | https://www.flickr.com/photos/jsjgeology/34109026652/ |
Author | James St. John |
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current | 20:34, 25 April 2017 | 3,289 × 2,635 (5.24 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 | 1/60 sec (0.016666666666667) |
F-number | f/4.5 |
ISO speed rating | 200 |
Date and time of data generation | 15:38, 18 July 2011 |
Lens focal length | 14.303 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 | 12:52, 25 April 2017 |
Y and C positioning | Co-sited |
Exif version | 2.21 |
Date and time of digitizing | 15:38, 18 July 2011 |
Meaning of each component |
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Image compression mode | 3 |
APEX shutter speed | 5.90625 |
APEX aperture | 4.34375 |
APEX exposure bias | 0 |
Maximum land aperture | 4.34375 APEX (f/4.51) |
Metering mode | Pattern |
Flash | Flash fired, compulsory flash firing, red-eye reduction mode |
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 | 08:52, 25 April 2017 |
Unique ID of original document | E50CD3B8FD68D12161E81E26A81B4CFB |