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File:Stegoceras skull density.png

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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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Source PLoS ONE, http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0021422
Author Eric Snively, Jessica M. Theodor
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This file was published in a Public Library of Science journal. Their website states that the content of all PLOS journals is published under the Creative Commons Attribution 4.0 license (or its previous version depending on the publication date), unless indicated otherwise.
w:en:Creative Commons
attribution
This file is licensed under the Creative Commons Attribution 2.5 Generic license.
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.
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/TimeThumbnailDimensionsUserComment
current23:56, 25 July 2016Thumbnail for version as of 23:56, 25 July 20162,028 × 2,661 (3.39 MB)FunkMonkCropped 2 % horizontally and 4 % vertically using CropTool with precise mode.
23:55, 25 July 2016Thumbnail for version as of 23:55, 25 July 20162,063 × 2,761 (3.39 MB)FunkMonk{{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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