File:Magnoavipes dinosaur track (Dakota Sandstone, Lower Cretaceous; Dinosaur Ridge, Colorado, USA) 2 (22022361868).jpg
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Summary[edit]
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| Description |
Magnoavipes dinosaur track on quartzose sandstone, Cretaceous of Colorado, USA. This sandstone bedding plane at Dinosaur Ridge, Colorado has numerous dinosaur footprints. The most common track type was produced by iguanodontid dinosaur. The track shown here is less common, but distinctive - a slender, three-toed print. This is Magnoavipes, a trace fossil name. It was likely made by a theropod dinosaur. The dark coloration in the track is not natural - it has been stained with charcoal to make it easier to see (the charcoal does not damage the track). Stratigraphy: Dakota Sandstone, upper Lower Cretaceous Locality: eastern side of Dinosaur Ridge, Dakota Hogback, west of Denver, north-central Colorado, USA 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. |
| Date | |
| Source | Magnoavipes dinosaur track (Dakota Sandstone, Lower Cretaceous; Dinosaur Ridge, Colorado, USA) 2 |
| Author | James St. John |
Licensing[edit]
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This image was originally posted to Flickr by James St. John at https://flickr.com/photos/47445767@N05/22022361868 (archive). It was reviewed on 1 December 2019 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 08:57, 1 December 2019 | | 4,000 × 3,000 (4.05 MB) | Ser Amantio di Nicolao (talk | contribs) | Transferred from Flickr via #flickr2commons |
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