File:USNM 35227 Trilobite hash beds (29968044283).jpg
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[edit]DescriptionUSNM 35227 Trilobite hash beds (29968044283).jpg |
USNM_35227 (pictured) and USNM_35225: Multiple trilobite fragments are fossilized in the same rock, these are commonly known as hash beds. "Hash" is an indicator of a near-shore environment, where waves could have broken apart trilobite exoskeletons and molts then re-deposited them. These particular "hash" beds are composed of trilobites Wilbernia walcotti (USNM 35227) and Idahoia wyomingensis (USNM 35225). Both samples were collected during the early 1900's in the northern region of Yellowstone National Park, from an exposed section of the Upper Cambrian (~500 million years ago) Snowy Range Formation. Collecting any natural resources, including rocks and fossils, is illegal in Yellowstone. Photo by Megan Norr; March 2016; Catalog #20793d; Original #USNM_35227 |
Date | |
Source | USNM_35227 Trilobite hash beds |
Author | Yellowstone National Park |
Licensing
[edit]Public domainPublic domainfalsefalse |
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This image or media file contains material based on a work of a National Park Service employee, created as part of that person's official duties. As a work of the U.S. federal government, such work is in the public domain in the United States. See the NPS website and NPS copyright policy for more information. | ![]() |
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This image was originally posted to Flickr by YellowstoneNPS at https://flickr.com/photos/80223459@N05/29968044283. It was reviewed on 16 March 2020 by FlickreviewR 2 and was confirmed to be licensed under the terms of the Public Domain Mark. |
16 March 2020
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current | 01:07, 15 March 2020 | ![]() | 3,287 × 2,536 (5.04 MB) | Ser Amantio di Nicolao (talk | contribs) | Transferred from Flickr via #flickr2commons |
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Camera manufacturer | NIKON CORPORATION |
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Camera model | NIKON D5200 |
Exposure time | 1/125 sec (0.008) |
F-number | f/5.6 |
ISO speed rating | 400 |
Date and time of data generation | 08:11, 11 February 2016 |
Lens focal length | 26 mm |
Image title |
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Orientation | Normal |
Horizontal resolution | 300 dpi |
Vertical resolution | 300 dpi |
Software used | Adobe Photoshop Elements 10.0 Windows |
File change date and time | 14:16, 26 October 2016 |
Y and C positioning | Co-sited |
Exposure Program | Not defined |
Exif version | 2.3 |
Date and time of digitizing | 08:11, 11 February 2016 |
Meaning of each component |
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Image compression mode | 4 |
APEX exposure bias | 0 |
Maximum land aperture | 4.2 APEX (f/4.29) |
Metering mode | Pattern |
Light source | Unknown |
Flash | Flash did not fire, compulsory flash suppression |
DateTime subseconds | 00 |
DateTimeOriginal subseconds | 00 |
DateTimeDigitized subseconds | 00 |
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 | 39 mm |
Scene capture type | Standard |
Scene control | Low gain up |
Contrast | Normal |
Saturation | Normal |
Sharpness | Normal |
Subject distance range | Unknown |
Unique image ID | 4D1E1FDC5CBB4EA797BA9BD8F4AD3C00 |
GPS tag version | 2.3.0.0 |
Supported Flashpix version | 1 |
Image width | 3,287 px |
Image height | 2,536 px |
Date metadata was last modified | 08:16, 26 October 2016 |
Unique ID of original document | uuid:faf5bdd5-ba3d-11da-ad31-d33d75182f1b |
IIM version | 36,067 |