File:Chancelloria eros fossil, Middle Cambrian, Millard County UT.jpg
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DescriptionChancelloria eros fossil, Middle Cambrian, Millard County UT.jpg |
Chancelloria eros scleritome (7.1 cm tall) from the Middle Cambrian of western Utah, USA. Cambrian rocks frequently produce some of the oddest-looking organisms anywhere in the fossil record. One distinctive group of fossil organisms long known from Cambrian rocks is the chancelloriids. Chancelloriids have bag-shaped bodies covered with multirayed sclerites. They are often perceived as representing fossil sponges (Porifera), but ultrastructural studies on chancelloriid skeletal components show that they are a separate group. This is a commercially prepared, complete scleritome of Chancelloria eros Walcott, 1920 (Animalia, Coeloscleritophora, Chancelloriidae) in hard, gray, slightly calcareous mudshale. It comes from the “deep Wheeler Lagerstätte” (sensu Robison, 1991 in The Early Evolution of Metazoa and the Significance of Problematic Taxa), one of several famous soft-bodied fossil deposits in Utah. Most chancelloriid fossils are isolated sclerites, typically collected from acid residues of Cambrian limestones. Stratigraphy: Wheeler Formation, upper Ptychagnostus atavus Interval-zone (= lower Bolaspidella Assemblage-zone), upper Middle Cambrian. Locality: House Range, northern Millard County, western Utah, USA. |
Date | |
Source | Chancelloria eros fossil (Wheeler Formation, Middle Cambrian; House Range, northern Millard County, western Utah, USA) |
Author | James St. John |
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This image was originally posted to Flickr by jsj1771 at https://www.flickr.com/photos/47445767@N05/15205168425. It was reviewed on 11 September 2014 by FlickreviewR and was confirmed to be licensed under the terms of the cc-by-2.0. |
11 September 2014
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current | 13:59, 11 September 2014 | 523 × 1,778 (1.47 MB) | Tillman (talk | contribs) | Transferred from Flickr via Flickr2commons |
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Pixel composition | RGB |
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Orientation | Normal |
Horizontal resolution | 600 dpi |
Vertical resolution | 600 dpi |
Software used | Adobe Photoshop CS2 Macintosh |
File change date and time | 02:16, 11 September 2014 |
Color space | Uncalibrated |
Image width | 523 px |
Image height | 1,778 px |
Date and time of digitizing | 22:15, 10 September 2014 |
Date metadata was last modified | 22:16, 10 September 2014 |