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File:Allosaurus Jaws Steveoc86.jpg

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Summary[edit]

Description
العربية: جُمجُمة ألوصور: رسمٌ يُظهرُ أقصى حد لِفتحة فم الألوصور كما افترض روبرت باكر
English: Allosaurus skull: Showing the maximum possible gape of Allosaurus as hypothesized by Robert Bakker
• The wide gape is based on figure 6 in 'Bakker 1998'. The head shape is based on specien AMNH 666, what Bakker calls 'Creosaur style allosaur'. [1] 'Creosaurus' is genrally thought to be synonymous with Allosaurus. A study in 2015 using computer models came to a similar conclusion. [2]
• The skin details are partly speculative. A juvenille allosaur is known to have had scaly skin on some parts of its body[3]. Up until recently large theropods with skin impressions have shown 'typical dinosaurian' scales.[4] In 2012 Yutyrannus was described, it showed that large theropods could have been covered in feathers [5]. There are many dinosaurs being discovered from all over the family tree with evidence of quils or feathers so it is possible that allosaurs also had them (see Feathered Dinosaur).

References

  1. Bakker, Robert T. (1998). "Brontosaur killers: Late Jurassic allosaurids as sabre-tooth cat analogues" (pdf). Gaia 15: 145–158. ISSN 0871-5424.
  2. Lautenschlager, Stephan (2015). "Estimating cranial musculoskeletal constraints in theropod dinosaurs" (pdf). Royal Society Oepn Science 2.
  3. Pinegar, Richard. Tyler; et al. (2003). "A Juvenile Allosaur with Preserved Integument from the Basal Morrison Formation of Central Wyoming". Journal of Vertebrate Paleontology 23.
  4. Currie, Philip J and Kevin Padian , ed. () , Academic Press, p. 100
  5. (2012). "A gigantic feathered dinosaur from the Lower Cretaceous of China" (PDF). Nature 484: 92–95. DOI:10.1038/nature10906. PMID 22481363.

NOTE: I often update my images. If you want to have any of my images on a website, please (if possible) don’t host/save it to the website server. I’d prefer it if the image's Wikimedia URL is used. This means that if I update an image, it will be updated on the site as well. Thanks.

Date Original version 2007
Source Own work
Author Steveoc 86

Wikipedia

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Licensing[edit]

I, Steveoc 86, the copyright holder of this work, hereby publishes it under the following licenses:
GNU head Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License.
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This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license.
Attribution: I, Steveoc 86
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This licensing tag was added to this file as part of the GFDL licensing update.
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attribution
This file is licensed under the Creative Commons Attribution 2.5 Generic license.
Attribution: I, Steveoc 86
You are free:
  • to share – to copy, distribute and transmit the work
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Date/TimeThumbnailDimensionsUserComment
current22:55, 21 December 2017Thumbnail for version as of 22:55, 21 December 20171,024 × 768 (223 KB)Steveoc 86Minor Tweaks.

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