File:Coiled nautiloid cephalopod in fossiliferous limestone (Lower Mercer Limestone, Middle Pennsylvanian; Rt. 16 roadcut near Trinway, Ohio, USA) 1 (33213443796).jpg
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[edit]DescriptionCoiled nautiloid cephalopod in fossiliferous limestone (Lower Mercer Limestone, Middle Pennsylvanian; Rt. 16 roadcut near Trinway, Ohio, USA) 1 (33213443796).jpg |
This fossil nautiloid is in an outcrop of the Lower Mercer Limestone, a widespread, laterally-persistent marine fossiliferous limestone horizon in the Pennsylvanian-aged Pottsville Group of eastern Ohio. Nautiloids are basically a squid-in-a-shell. Only a few species are alive in modern oceans (see the chambered nautilus photos at: www.flickr.com/photos/jsjgeology/albums/72157659717065690). Most nautiloids had long, slightly tapering shells. Some had open-whorled shells (as in this example) and some had tightly coiled shells. Classification: Animalia, Mollusca, Cephalopoda, Nautiloidea Stratigraphy: Lower Mercer Limestone, Pottsville Group, lower Atokan Stage, lower Middle Pennsylvanian Locality: roadcut along the northern side Rt. 16, southern margin of Irish Ridge, west of the Rt. 16-Rt. 60 intersection, northwest of the town of Trinway, northwestern Muskingum County, eastern Ohio, USA (40° 09’ 12.95” North latitude, 82° 02’ 43.27” West longitude) |
Date | |
Source | Coiled nautiloid cephalopod in fossiliferous limestone (Lower Mercer Limestone, Middle Pennsylvanian; Rt. 16 roadcut near Trinway, 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@N05/33213443796. It was reviewed on 24 June 2017 by FlickreviewR and was confirmed to be licensed under the terms of the cc-by-2.0. |
24 June 2017
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current | 17:35, 24 June 2017 | 3,330 × 1,963 (5.94 MB) | Ser Amantio di Nicolao (talk | contribs) | Transferred from Flickr via Flickr2Commons |
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Camera manufacturer | Canon |
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F-number | f/10 |
ISO speed rating | 80 |
Date and time of data generation | 10:35, 25 February 2017 |
Lens focal length | 9.681 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 | 19:51, 4 March 2017 |
Y and C positioning | Co-sited |
Exif version | 2.21 |
Date and time of digitizing | 10:35, 25 February 2017 |
Meaning of each component |
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APEX shutter speed | 5.90625 |
APEX aperture | 6.65625 |
APEX exposure bias | −0.66666666666667 |
Maximum land aperture | 3.625 APEX (f/3.51) |
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Flash | Flash fired, compulsory flash firing, red-eye reduction mode |
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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 | 14:51, 4 March 2017 |
Unique ID of original document | FF16D2849D4C5899F699952FE586CCD1 |