File:Stegoceras skull density.png
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DescriptionStegoceras skull density.png |
Internal densities of bone in Stegoceras validum (UA 2). Transverse CT sections from anterior (A) to posterior (F) through the cranium of Stegoceras validum (UA 2) seen in anterior oblique view. Inset CT reconstruction in lateral view (top) depicts section positions. Density and thickness of cortical bone increase towards the apex of the dome from the periphery, anteroposteriorly (B–D) and medially (C, D). Trabeculae radiate roughly perpencidular to the dome's outer surface, evident in the low-density (blue) region posterior to the orbit (B–E). Note that density of superficial bone may be inflated by beam hardening, but a dense, deep compact layer is definitively present. Dense compact bone (Hounsfield values of approximately 2000) surrounds presumed vascular traces, forming tubes that empty onto the dome surface; three of these are visible in D and E. These tubular structures recall struts within artiodactyl cranial sinuses. |
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Date | |||
Source | PLoS ONE, http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0021422 | ||
Author | Eric Snively, Jessica M. Theodor | ||
Permission (Reusing this file) |
This file is licensed under the Creative Commons Attribution 2.5 Generic license.
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Other versions | Direct link to images: http://www.plosone.org/article/slideshow.action?uri=info:doi/10.1371/journal.pone.0021422&imageURI=info:doi/10.1371/journal.pone.0021422.g001 |
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 23:56, 25 July 2016 | 2,028 × 2,661 (3.39 MB) | FunkMonk (talk | contribs) | Cropped 2 % horizontally and 4 % vertically using CropTool with precise mode. | |
23:55, 25 July 2016 | 2,063 × 2,761 (3.39 MB) | FunkMonk (talk | contribs) | {{Information |Description=Internal densities of bone in Stegoceras validum (UA 2). Transverse CT sections from anterior (A) to posterior (F) through the cranium of Stegoceras validum (UA 2) seen in anterior oblique view. Inset CT reconstruction in la... |
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