Original file (2,196 × 1,301 pixels, file size: 1.15 MB, MIME type: image/jpeg)
Summary
DescriptionDaemonelix burrows (Harrison Formation, Middle Miocene; Agate Fossil Beds National Monument, northwestern Nebraska, USA) (15545351982).jpg |
Daemonelix burrows in the Miocene of Nebraska, USA. (original vintage photo owned by the University of Nebraska; photo provided here, for geoscience education purposes, courtesy of Agate Fossil Beds National Monument) Trace fossils are any indirect evidence of ancient life. They refer to features in rocks that do not represent parts of the body of a once-living organism. Traces include footprints, tracks, trails, burrows, borings, and bitemarks. Body fossils provide information about the morphology of ancient organisms, while trace fossils provide information about the behavior of ancient life forms. Interpreting trace fossils and determination of the identity of a trace maker can be straightforward (for example, a dinosaur footprint represents walking behavior) or not. Sediments that have trace fossils are said to be bioturbated. Burrowed textures in sedimentary rocks are referred to as bioturbation. Trace fossils have scientific names assigned to them, in the same style & manner as living organisms or body fossils. Daemonelix burrows are commonly called “Devil’s corkscrews”. These distinctive, large, spiral burrows were made by an ancient species of terrestrial beaver. The spiraled portion of these trace fossils is usually about 1.5 to 2 meters tall. The base of the spiraled portion merges with a subhorizontal tube. The burrows are filled with siliciclastic sediments that are better cemented compared with surrounding materials. Stratigraphy: paleosol in the Harrison Formation, upper Middle Miocene Locality: Agate Fossil Beds National Monument, northwestern Nebraska, USA |
Date | |
Source | Daemonelix burrows (Harrison Formation, Middle Miocene; Agate Fossil Beds National Monument, northwestern Nebraska, USA) |
Author | James St. John |
Licensing
- You are free:
- to share – to copy, distribute and transmit the work
- to remix – to adapt the work
- Under the following conditions:
- attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
This image was originally posted to Flickr by James St. John at https://flickr.com/photos/47445767@N05/15545351982 (archive). It was reviewed on 4 November 2019 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
4 November 2019
Items portrayed in this file
depicts
creator
some value
copyright status
copyrighted
copyright license
Creative Commons Attribution 2.0 Generic
inception
23 May 2018
source of file
file available on the internet
File history
Click on a date/time to view the file as it appeared at that time.
Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 14:41, 4 November 2019 | 2,196 × 1,301 (1.15 MB) | Ainz Ooal Gown | Transferred from Flickr via #flickr2commons |
File usage
Global file usage
The following other wikis use this file:
- Usage on es.wikipedia.org
- Usage on vi.wikipedia.org
Metadata
This file contains additional information, probably added from the digital camera or scanner used to create or digitize it.
If the file has been modified from its original state, some details may not fully reflect the modified file.
Width | 2,196 px |
---|---|
Height | 1,329 px |
Pixel composition | Black and white (Black is 0) |
Orientation | Normal |
Number of components | 4 |
Horizontal resolution | 400 dpi |
Vertical resolution | 400 dpi |
Software used | Adobe Photoshop Elements 13.0 (Macintosh) |
File change date and time | 12:16, 23 May 2018 |
Exif version | 2.21 |
Color space | Uncalibrated |
Unique ID of original document | uuid:E9A87C44560B11E499AEA093EB0260D6 |
Date and time of digitizing | 11:29, 15 October 2014 |
Date metadata was last modified | 08:16, 23 May 2018 |
Copyright status | Copyright status not set |
IIM version | 29,735 |
-
Annuals36
-
Bulbs, Corms & Tubers41
-
Ferns27
-
Fruits3
-
Garden Plants23
-
Grasses26
-
Herb17
-
Insects1
-
Mammals1
-
Midwest Native Plants0
-
Northeast Native Plants112
-
Perennials123
-
Rose1
-
Shrubs47
-
Trees112
-
Tropical Plants53
-
Upland Birds5
-
Vines18
-
Viola Tricolor1
-
Water Gardening & Plants9
-
Waterfowl0
-
Wetland Birds0
-
Wetland Plants4
-
Wildbirds172
-
Wildflowers1
-
Woodland Plants29
Recent Comments