File:USNM 35227 Trilobite hash beds (29968044283).jpg

From Wikimedia Commons, the free media repository
Jump to navigation Jump to search

Original file ‎(3,287 × 2,536 pixels, file size: 5.04 MB, MIME type: image/jpeg)

Captions

Captions

Add a one-line explanation of what this file represents

Summary

[edit]
Description

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 domain 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.


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

Authority control

File history

Click on a date/time to view the file as it appeared at that time.

Date/TimeThumbnailDimensionsUserComment
current01:07, 15 March 2020Thumbnail for version as of 01:07, 15 March 20203,287 × 2,536 (5.04 MB)Ser Amantio di Nicolao (talk | contribs)Transferred from Flickr via #flickr2commons

You cannot overwrite this file.

There are no pages that use this file.

Metadata

This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.

Retrieved from "https://commons.wikimedia.org/w/index.php?title=File:USNM_35227_Trilobite_hash_beds_(29968044283).jpg&oldid=912544932"