File:Brachiopods in fossiliferous limestone (Lower Mercer Limestone, Middle Pennsylvanian; Symmes Creek at Mollies Rock Road bridge, Muskingum County, Ohio, USA).jpg
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[edit]DescriptionBrachiopods in fossiliferous limestone (Lower Mercer Limestone, Middle Pennsylvanian; Symmes Creek at Mollies Rock Road bridge, Muskingum County, Ohio, USA).jpg |
English: Brachiopods in fossiliferous limestone in the Pennsylvanian of Ohio, USA.
The Lower Mercer Limestone is a Middle Pennsylvanian-aged, laterally persistent, marine fossiliferous limestone unit in the Pottsville Group of eastern Ohio, USA. It is richly fossiliferous, principally dominated by brachiopods and crinoid stems. The fossils shown above are brachiopods, which are sessile, benthic, filter-feeding, marine invertebrates. They first appear in the Cambrian and are still alive in modern oceans. They all have two shells - most have shells of calcite (CaCO3 - calcium carbonate). Brachiopods dominated Paleozoic shallow seafloors. They were also fairly common in Mesozoic oceans. They are scarce in modern seas. Classification: Animalia, Brachiopoda, Articulata (a.k.a. Rhynchonelliformea) Locality: large talus block along the northern bank of Symmes Creek, just upstream of the North Fork/North Branch confluence & just upstream of the Mollies Rock Road bridge over Symmes Creek, Madison Township, northern Muskingum County, eastern Ohio, USA |
Date | |
Source | https://www.flickr.com/photos/47445767@N05/23796700856/ |
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@N05/23796700856 (archive). It was reviewed on 4 March 2020 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
4 March 2020
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current | 16:25, 4 March 2020 | 4,000 × 3,000 (4.6 MB) | Ser Amantio di Nicolao (talk | contribs) | Uploaded a work by James St. John from https://www.flickr.com/photos/47445767@N05/23796700856/ with UploadWizard |
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Camera manufacturer | Canon |
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Camera model | Canon PowerShot D10 |
Exposure time | 1/125 sec (0.008) |
F-number | f/2.8 |
ISO speed rating | 80 |
Date and time of data generation | 15:17, 13 September 2015 |
Lens focal length | 6.2 mm |
Width | 4,000 px |
Height | 3,000 px |
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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 | 02:27, 18 December 2015 |
Y and C positioning | Co-sited |
Exif version | 2.21 |
Date and time of digitizing | 15:17, 13 September 2015 |
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Image compression mode | 3 |
APEX shutter speed | 6.96875 |
APEX aperture | 2.96875 |
APEX exposure bias | −0.33333333333333 |
Maximum land aperture | 2.96875 APEX (f/2.8) |
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Flash | Flash did not fire, compulsory flash suppression |
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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 | 19:27, 17 December 2015 |
Unique ID of original document | 8ED932E34E289DDE3221FD690DE160F9 |