File:Cystiphylloides americanum (fossil coral) (Columbus Limestone, Middle Devonian; Delaware County, Ohio, USA) 1 (33774851600).jpg
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editDescriptionCystiphylloides americanum (fossil coral) (Columbus Limestone, Middle Devonian; Delaware County, Ohio, USA) 1 (33774851600).jpg |
Cystiphylloides americanum (Edwards & Haime, 1851) - fossil coral from the Devonian of Ohio, USA. This is a silicified, solitary rugose coral ("horn coral"). Solitary rugose corals have tapering calcitic skeletons. During life, a polyp (sea anemone animal) lived in the cup at the top of the skeleton. This particular coral experienced several growth interruptions during life - probably due to storms on shallow seafloors. These interruptions account for the ragged appearance of the outer skeletal surface. The fossil has been silicified (replaced by quartz/silica - SiO2). Silicified fossils are more resistant to weathering than surrounding host rocks. Upon weathering and erosion, such fossils stand out in relief, or are weathered completely free of matrix, as is this specimen. The yellowish-brownish coloration is from iron oxide staining. Classification: Animalia, Cnidaria, Anthozoa, Rugosa, Cystiphyllidae Stratigraphy: Columbus Limestone, Middle Devonian Locality: undisclosed site in Delaware County, central Ohio, USA See info. at: <a href="https://en.wikipedia.org/wiki/Rugosa" rel="nofollow">en.wikipedia.org/wiki/Rugosa</a> |
Date | |
Source | Cystiphylloides americanum (fossil coral) (Columbus Limestone, Middle Devonian; Delaware County, Ohio, USA) 1 |
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@N05/33774851600 (archive). It was reviewed on 5 December 2019 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
5 December 2019
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 03:29, 5 December 2019 | 1,842 × 1,587 (1.92 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 | 1/60 sec (0.016666666666667) |
F-number | f/11 |
ISO speed rating | 80 |
Date and time of data generation | 15:22, 10 April 2017 |
Lens focal length | 11.614 mm |
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 | 11:00, 20 April 2017 |
Y and C positioning | Co-sited |
Exif version | 2.21 |
Date and time of digitizing | 15:22, 10 April 2017 |
Meaning of each component |
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Image compression mode | 3 |
APEX shutter speed | 5.90625 |
APEX aperture | 6.90625 |
APEX exposure bias | −0.66666666666667 |
Maximum land aperture | 4 APEX (f/4) |
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 | Manual exposure |
White balance | Auto white balance |
Digital zoom ratio | 1 |
Scene capture type | Portrait |
Lens used | 6.2-18.6 mm |
Date metadata was last modified | 07:00, 20 April 2017 |
Unique ID of original document | 9CFCCD554574E60FA2CD5FC06E459A01 |