File:Allosaurus size comparison.svg

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Summary

Description

A size comparison of various specimens of the theropod dinosaur genus Allosaurus.

• Silhouettes are based on Allosaurus skeletal reconstructions by Scott Hartman [2] and Henrique Paes [3], used with permission. I, the author, require that Scott Hartman, Henrique Paes and steveoc 86 at Wikimedia Commons get attribution.
• AMNH 4734, DINO 2560 (UUVP 6000), and MOR 693 are scaled using the scale bars in their respective reconstructions. The average size of adult Allosaurus fragilis specimens are estimated at ~8.5 m [1]. DINO 11541 is based on figures 3 and 4 in Chure et al. (2020). Allosaurus europaeus, ML 415, is scaled to ~7 m based on an estimate by Greg Paul,[2] the skull scaled based on figure 16 in Chure et al. (2020). SMA 0005 silhouette based on Fig 1 in Foth et al. (2013) with some details from images of the mount online, scaled to about 7.6 m.[3][4]
• The holotype of Allosaurus fragilis YPM 1930 is considered undiagnostic, and because of this, a more complete specimen from the same quarry, AMNH 4734, was proposed as a neotype for the species.[5][6] DINO 2560 is often referred to Allosaurus fragilis. In 2020, Allosaurus jimmadseni was described with DINO 11541 designated the holotype, SMA 0005 and MOR 693 were referred to the species.[7] Allosaurus europaeus, ML 415, is only known from one fragmentary specimen consisting of a partial skull, ribs and a few cervical vertebrae;[8] the silhouette above hypothetical should be viewed with caution.
• Fragmentary allosaur material, which was named Epanterias, may belong to Allosaurus suggesting the genus could grow larger. Epanterias has been estimated 12 to 13 m.[9][10][11] A large allosaurid Saurophaganax is also considered a species of Allosaurus by some researchers (Allosaurus maximus).[12][2]
• Humans are scaled to 170 cm (5 ft 7 in) and 160 cm (5 ft 3 in).

NOTE: I often update my images. If you want to post 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 or a link to the original provided. Thanks.

References

  1. ↑ Glut, Donald F. (1997) "Allosaurus" in Dinosaurs: The Encyclopedia, Jefferson: McFarland & Co, pp. 105–117 ISBN: 0-89950-917-7.
  2. ↑ a b “Dinosaurs”, in The Princeton Field Guide to Dinosaurs[1], Princeton University Press, 2011-12-31, ISBN 978-1-4008-3615-4, pages 67–67
  3. ↑ Foth, Christian (2015-05-12). "New insights into the lifestyle of Allosaurus (Dinosauria: Theropoda) based on another specimen with multiple pathologies". PeerJ 3: e940. DOI:10.7717/peerj.940. ISSN 2167-8359.
  4. ↑ Allosaurus sp. BIG AL TWO Skeleton - Fossil Replica. www.bhigr.com. Retrieved on 2020-02-03.
  5. ↑ Paul, Gregory S. (2010). "Case 3506 Allosaurus Marsh, 1877 (Dinosauria, Theropoda): proposed conservation of usage by designation of a neotype for its type species Allosaurus fragilis Marsh, 1877". The Bulletin of Zoological Nomenclature 67 (1): 53–56. DOI:10.21805/bzn.v67i1.a7. ISSN 0007-5167.
  6. ↑ Carrano, Matthew T. (2018-05-31). "Comment (Case 3506) — Conservation of Allosaurus Marsh, 1877 (Dinosauria, Theropoda): additional data in support of the proposed neotype for its type species Allosaurus fragilis Marsh, 1877". The Bulletin of Zoological Nomenclature 75 (1): 59. DOI:10.21805/bzn.v75.a014. ISSN 0007-5167.
  7. ↑ Chure, Daniel J. (2020-01-24). "Cranial anatomy of Allosaurus jimmadseni, a new species from the lower part of the Morrison Formation (Upper Jurassic) of Western North America". PeerJ 8: e7803. DOI:10.7717/peerj.7803. ISSN 2167-8359.
  8. ↑ Mateus, Octávio Walen, Aart The large theropod fauna of the Lourinha Formation (Portugal) and its similarity to that of the Morrison Formation, with a description of a new species of allosaurus OCLC: 1117611182.
  9. ↑ Holtz, Thomas R., Jr. (2004) Weishampel, David B. , ed. The Dinosauria (2nd ed.), Berkeley: University of California Press, pp. 71–110 ISBN: 0-520-24209-2.
  10. ↑ Mortimer, Mickey (2003-07-21). And the largest Theropod is.... The Dinosaur Mailing List. Retrieved on 2007-09-08.
  11. ↑ Madsen, James H., Jr. (1993) [1976] Allosaurus fragilis: A Revised Osteology, Utah Geological Survey Bulletin 109 (2nd ed.), Salt Lake City: Utah Geological Survey
  12. ↑ Smith, David K. (1998-04-10). "A morphometric analysis ofAllosaurus". Journal of Vertebrate Paleontology 18 (1): 126–142. DOI:10.1080/02724634.1998.10011039. ISSN 0272-4634.
Source File:Allosaurus size comparison.svg is an altered version of an image by User:Marmelad which inturn is a vectorized version of an image by User:Dropzink (seen to the right)
Author Steveoc 86 Marmelad Scott Hartman, [4], Henrique Paes [5].
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(newest | oldest) View (newer 10 | ) (10 | 20 | 50 | 100 | 250 | 500)
Date/TimeThumbnailDimensionsUserComment
current13:05, 5 February 2020Thumbnail for version as of 13:05, 5 February 20202,560 × 640 (99 KB)Steveoc 86Remove AMNH 680 which is from the Salt Wash Member, could be ''A. jimmadensi''
14:34, 3 February 2020Thumbnail for version as of 14:34, 3 February 20202,560 × 640 (111 KB)Steveoc 86New Version - Separate out the species and additional specimens.
22:08, 8 June 2019Thumbnail for version as of 22:08, 8 June 20191,280 × 640 (61 KB)Steveoc 86Reverted to version as of 20:45, 14 April 2018 (UTC) Rv good faith edit, the silhouette is scaled to hartman's skeletal. '7.5m' in the literature is probably wrong.
11:13, 8 June 2019Thumbnail for version as of 11:13, 8 June 20191,280 × 640 (62 KB)KoprXMOR 693 size fix
20:45, 14 April 2018Thumbnail for version as of 20:45, 14 April 20181,280 × 640 (61 KB)Steveoc 86Update silhouettes, Remove dubious Epanterias.
15:43, 23 September 2017Thumbnail for version as of 15:43, 23 September 20171,280 × 720 (57 KB)Steveoc 86Minor Cosmetic Changes
11:26, 3 April 2014Thumbnail for version as of 11:26, 3 April 20141,024 × 576 (49 KB)Steveoc 86Tweaks, attempt 2.
10:58, 3 April 2014Thumbnail for version as of 10:58, 3 April 2014766 × 442 (36 KB)Steveoc 86Reverted to version as of 14:44, 18 August 2011
10:42, 3 April 2014Thumbnail for version as of 10:42, 3 April 20141,024 × 576 (50 KB)Steveoc 86Tweaks
14:44, 18 August 2011Thumbnail for version as of 14:44, 18 August 2011766 × 442 (36 KB)Giro720Fixing the DOCTYPE issue
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