File:Diplacanthus striatus fossil fish (Lower Devonian; Scotland) (15149695488).jpg
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DescriptionDiplacanthus striatus fossil fish (Lower Devonian; Scotland) (15149695488).jpg |
Diplacanthus striatus (Agassiz, 1835) fossil fish from the Lower Devonian of Scotland (public display, FMNH PF 2198, Field Museum of Natural History, Chicago, Illinois, USA). Acanthodians are an extinct group of jawed fish that had spines along the anterior margin of each fin (see the blackish-colored spikes on the specimen shown here). The root word “acanth” in “acanthodian fish” means “spine”. Acanthodians were the first fish to evolve jaws and scales. Classification: Animalia, Chordata, Vertebrata, Acanthodii, Climatiiformes, Diplacanthida, Diplacanthidae |
Date | |
Source | Diplacanthus striatus fossil fish (Lower Devonian; Scotland) |
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@N05/15149695488 (archive). It was reviewed on 7 December 2019 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
7 December 2019
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 18:56, 7 December 2019 | 1,519 × 799 (1.45 MB) | Ser Amantio di Nicolao (talk | contribs) | Transferred from Flickr via #flickr2commons |
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Camera manufacturer | NIKON CORPORATION |
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Exposure time | 1/60 sec (0.016666666666667) |
F-number | f/5.6 |
Date and time of data generation | 11:34, 11 June 2010 |
Lens focal length | 200 mm |
Orientation | Normal |
Horizontal resolution | 300 dpi |
Vertical resolution | 300 dpi |
Software used | Adobe Photoshop CS2 Macintosh |
File change date and time | 19:06, 23 September 2014 |
Y and C positioning | Co-sited |
Exposure Program | Not defined |
Exif version | 2.21 |
Date and time of digitizing | 11:34, 11 June 2010 |
Meaning of each component |
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Image compression mode | 4 |
APEX exposure bias | 0 |
Maximum land aperture | 5 APEX (f/5.66) |
Metering mode | Pattern |
Light source | Unknown |
Flash | Flash fired, strobe return light detected, auto mode |
DateTime subseconds | 90 |
DateTimeOriginal subseconds | 90 |
DateTimeDigitized subseconds | 90 |
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 | 300 mm |
Scene capture type | Standard |
Scene control | None |
Contrast | Normal |
Saturation | Normal |
Sharpness | Normal |
Subject distance range | Unknown |
Supported Flashpix version | 1 |
Image width | 1,519 px |
Image height | 799 px |
Date metadata was last modified | 15:06, 23 September 2014 |