File:Stigmaria fossil root (Newark, Ohio, USA) 1.jpg
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Summary
[edit]DescriptionStigmaria fossil root (Newark, Ohio, USA) 1.jpg |
English: Plants are multicellular, photosynthetic eucaryotes. The oldest known land plant body fossils are Silurian in age. Fossil root traces of land plants are known back in the Ordovician. The Devonian was the key time interval during which land plants flourished and Earth experienced its first “greening” of the land. The earliest land plants were small and simple and probably remained close to bodies of water. By the Late Devonian, land plants had evolved large, tree-sized bodies and the first-ever forests appeared.
Seen here is a silicified Stigmaria fossil. Stigmaria is a form genus for the roots of large arborescent lycopods (= scale trees) common during the Pennsylvanian - the "Age of Coal Swamps". Stigmaria roots have cylindrical shapes (if not compressed and distorted) and numerous pits. Classification: Plantae, Lycophyta, Lepidodendrales, Lepidodendraceae Stratigraphy: unknown, but apparently Pennsylvanian (Upper Carboniferous) Locality: unknown provenance (collected during wall reconstruction at a site north of downtown Newark, Licking County, east-central Ohio, USA) |
Date | |
Source | https://www.flickr.com/photos/47445767@N05/52673860844/ |
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@N05/52673860844. It was reviewed on 7 February 2023 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
7 February 2023
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 16:40, 7 February 2023 | 3,070 × 1,866 (4.94 MB) | Ser Amantio di Nicolao (talk | contribs) | Uploaded a work by James St. John from https://www.flickr.com/photos/47445767@N05/52673860844/ 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/9 |
ISO speed rating | 80 |
Date and time of data generation | 16:38, 6 February 2023 |
Lens focal length | 8.295 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 18.0 (Macintosh) |
File change date and time | 18:28, 6 February 2023 |
Y and C positioning | Co-sited |
Exif version | 2.21 |
Date and time of digitizing | 16:38, 6 February 2023 |
Meaning of each component |
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Image compression mode | 3 |
APEX shutter speed | 5.90625 |
APEX aperture | 6.34375 |
APEX exposure bias | −0.66666666666667 |
Maximum land aperture | 3.34375 APEX (f/3.19) |
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 | Standard |
Lens used | 6.2-18.6 mm |
Date metadata was last modified | 13:28, 6 February 2023 |
Unique ID of original document | 7168DC72D446608ADC69D0A4008E483C |
IIM version | 32,767 |