<p>A size comparison of various specimens of the theropod dinosaur genus <i><a href="https://en.wikipedia.org/wiki/Allosaurus" class="extiw" title="w:Allosaurus">Allosaurus</a></i>. 
</p>
<dl><dd>•  Silhouettes are based on <i>Allosaurus</i> skeletal reconstructions by Scott Hartman <a rel="nofollow" class="external autonumber" href="http://shartman.deviantart.com/art/Allosaur-comparison-173333349">[2]</a> and Henrique Paes <a rel="nofollow" class="external autonumber" href="https://www.deviantart.com/randomdinos/art/Allosaurus-fragilis-skeletal-reconstruction-751915067">[3]</a>, used with permission. I, the author, require that Scott Hartman, Henrique Paes and <a href="//commons.wikimedia.org/wiki/User:Steveoc_86" title="User:Steveoc 86"> steveoc 86</a> at Wikimedia Commons get attribution.</dd></dl><dl><dd>•  AMNH 4734, DINO 2560 (UUVP 6000), and MOR 693 are scaled using the scale bars in their respective reconstructions. The average size of adult <i>Allosaurus fragilis</i> specimens are estimated at ~8.5 m <sup id="cite_ref-DFG97_1-0" class="reference"><a href="#cite_note-DFG97-1">[1]</a></sup>.  DINO 11541 is based on figures 3 and 4 in Chure et al. (2020). <i>Allosaurus europaeus</i>, ML 415, is scaled to ~7 m based on an estimate by Greg Paul,<sup id="cite_ref-Paul2016_2-0" class="reference"><a href="#cite_note-Paul2016-2">[2]</a></sup> 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.<sup id="cite_ref-3" class="reference"><a href="#cite_note-3">[3]</a></sup><sup id="cite_ref-4" class="reference"><a href="#cite_note-4">[4]</a></sup></dd>
<dd>• The holotype of <i>Allosaurus fragilis</i> 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.<sup id="cite_ref-5" class="reference"><a href="#cite_note-5">[5]</a></sup><sup id="cite_ref-6" class="reference"><a href="#cite_note-6">[6]</a></sup> DINO 2560 is often referred to <i>Allosaurus fragilis</i>. In 2020, <i>Allosaurus jimmadseni</i> was described with DINO 11541 designated the holotype, SMA 0005 and MOR 693 were referred to the species.<sup id="cite_ref-7" class="reference"><a href="#cite_note-7">[7]</a></sup><i>Allosaurus europaeus</i>, ML 415,  is only known from one fragmentary specimen consisting of a partial skull, ribs and a few cervical vertebrae;<sup id="cite_ref-8" class="reference"><a href="#cite_note-8">[8]</a></sup> the silhouette above  hypothetical should be viewed with caution.</dd>
<dd>• Fragmentary allosaur material, which was named <i><a href="https://en.wikipedia.org/wiki/Epanterias" class="extiw" title="w:Epanterias">Epanterias</a></i>, may belong to <i>Allosaurus</i> suggesting the genus could grow larger. <i>Epanterias</i> has been estimated 12 to 13 m.<sup id="cite_ref-HMC04_9-0" class="reference"><a href="#cite_note-HMC04-9">[9]</a></sup><sup id="cite_ref-MMDML03_10-0" class="reference"><a href="#cite_note-MMDML03-10">[10]</a></sup><sup id="cite_ref-JM76_11-0" class="reference"><a href="#cite_note-JM76-11">[11]</a></sup> A large allosaurid <i><a href="https://en.wikipedia.org/wiki/Saurophaganax" class="extiw" title="w:Saurophaganax">Saurophaganax</a></i> is also considered a species of <i>Allosaurus</i> by some researchers (<i>Allosaurus maximus</i>).<sup id="cite_ref-12" class="reference"><a href="#cite_note-12">[12]</a></sup><sup id="cite_ref-Paul2016_2-1" class="reference"><a href="#cite_note-Paul2016-2">[2]</a></sup></dd>
<dd>• Humans are scaled to 170 cm (5 ft 7 in) and 160 cm (5 ft 3 in).</dd></dl><p><b>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.</b> 
</p>
<h2><span class="mw-headline" id="References">References</span></h2>
<div class="reflist references-column-count references-column-count-2" style="-moz-column-count:2;-webkit-column-count:2;column-count:2; list-style-type: decimal;">
<ol class="references"><li id="cite_note-DFG97-1"><span class="mw-cite-backlink"><a href="#cite_ref-DFG97_1-0">↑</a></span> <span class="reference-text"><cite class="book" style="font-style:normal" id="Reference-Glut-1997">Glut, Donald F. (1997) "Allosaurus" in    <i> Dinosaurs: The Encyclopedia</i>, <a href="https://en.wikipedia.org/wiki/en:Jefferson,_North_Carolina" class="extiw" title="w:en:Jefferson, North Carolina"><span title="town in Ashe County, North Carolina, United States">Jefferson</span></a>:  McFarland &amp; Co, pp. 105–117  <small><a href="https://en.wikipedia.org/wiki/International_Standard_Book_Number" class="extiw" title="en:International Standard Book Number">ISBN</a>:  <a href="//commons.wikimedia.org/wiki/Special:BookSources/0-89950-917-7" title="Special:BookSources/0-89950-917-7">0-89950-917-7</a>. </small></cite></span>
</li>
<li id="cite_note-Paul2016-2"><span class="mw-cite-backlink">↑ <a href="#cite_ref-Paul2016_2-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-Paul2016_2-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text">“Dinosaurs”, in <cite>The Princeton Field Guide to Dinosaurs</cite><sup><a rel="nofollow" class="external autonumber" href="https://dx.doi.org/10.1515/9781400836154.67a">[1]</a></sup>, Princeton University Press, <span class="mw-formatted-date" title="2011-12-31">2011-12-31</span>, <small><a href="https://en.wikipedia.org/wiki/International_Standard_Serial_Number" class="extiw" title="w:International Standard Serial Number">ISBN</a> <a href="//commons.wikimedia.org/wiki/Special:BookSources/978-1-4008-3615-4" title="Special:BookSources/978-1-4008-3615-4">978-1-4008-3615-4</a></small>, pages 67–67</span>
</li>
<li id="cite_note-3"><span class="mw-cite-backlink"><a href="#cite_ref-3">↑</a></span> <span class="reference-text"><cite style="font-style:normal">Foth, Christian (<span class="mw-formatted-date" title="2015-05-12">2015-05-12</span>). "<a rel="nofollow" class="external text" href="https://peerj.com/articles/940">New insights into the lifestyle of Allosaurus (Dinosauria: Theropoda) based on another specimen with multiple pathologies</a>". <i>PeerJ</i> <b>3</b>: e940. <a href="https://en.wikipedia.org/wiki/Digital_object_identifier" class="extiw" title="w:Digital object identifier">DOI</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.7717/peerj.940">10.7717/peerj.940</a>. <a href="https://en.wikipedia.org/wiki/International_Standard_Serial_Number" class="extiw" title="en:International Standard Serial Number">ISSN</a> <a rel="nofollow" class="external text" href="https://www.worldcat.org/issn/2167-8359">2167-8359</a>.</cite></span>
</li>
<li id="cite_note-4"><span class="mw-cite-backlink"><a href="#cite_ref-4">↑</a></span> <span class="reference-text"><a rel="nofollow" class="external text" href="http://www.bhigr.com/store/product.php?productid=474">Allosaurus sp. BIG AL TWO Skeleton - Fossil Replica</a>. <i>www.bhigr.com</i>. Retrieved on <span class="mw-formatted-date" title="2020-02-03">2020-02-03</span>.</span>
</li>
<li id="cite_note-5"><span class="mw-cite-backlink"><a href="#cite_ref-5">↑</a></span> <span class="reference-text"><cite style="font-style:normal">Paul, Gregory S. (2010). "<a rel="nofollow" class="external text" href="http://www.bioone.org/doi/10.21805/bzn.v67i1.a7">Case 3506 Allosaurus Marsh, 1877 (Dinosauria, Theropoda): proposed conservation of usage by designation of a neotype for its type species Allosaurus fragilis Marsh, 1877</a>". <i>The Bulletin of Zoological Nomenclature</i> <b>67</b> (1): 53–56. <a href="https://en.wikipedia.org/wiki/Digital_object_identifier" class="extiw" title="w:Digital object identifier">DOI</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.21805/bzn.v67i1.a7">10.21805/bzn.v67i1.a7</a>. <a href="https://en.wikipedia.org/wiki/International_Standard_Serial_Number" class="extiw" title="en:International Standard Serial Number">ISSN</a> <a rel="nofollow" class="external text" href="https://www.worldcat.org/issn/0007-5167">0007-5167</a>.</cite></span>
</li>
<li id="cite_note-6"><span class="mw-cite-backlink"><a href="#cite_ref-6">↑</a></span> <span class="reference-text"><cite style="font-style:normal">Carrano, Matthew T. (<span class="mw-formatted-date" title="2018-05-31">2018-05-31</span>). "<a rel="nofollow" class="external text" href="https://dx.doi.org/10.21805/bzn.v75.a014">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</a>". <i>The Bulletin of Zoological Nomenclature</i> <b>75</b> (1): 59. <a href="https://en.wikipedia.org/wiki/Digital_object_identifier" class="extiw" title="w:Digital object identifier">DOI</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.21805/bzn.v75.a014">10.21805/bzn.v75.a014</a>. <a href="https://en.wikipedia.org/wiki/International_Standard_Serial_Number" class="extiw" title="en:International Standard Serial Number">ISSN</a> <a rel="nofollow" class="external text" href="https://www.worldcat.org/issn/0007-5167">0007-5167</a>.</cite></span>
</li>
<li id="cite_note-7"><span class="mw-cite-backlink"><a href="#cite_ref-7">↑</a></span> <span class="reference-text"><cite style="font-style:normal">Chure, Daniel J. (<span class="mw-formatted-date" title="2020-01-24">2020-01-24</span>). "<a rel="nofollow" class="external text" href="https://peerj.com/articles/7803">Cranial anatomy of Allosaurus jimmadseni, a new species from the lower part of the Morrison Formation (Upper Jurassic) of Western North America</a>". <i>PeerJ</i> <b>8</b>: e7803. <a href="https://en.wikipedia.org/wiki/Digital_object_identifier" class="extiw" title="w:Digital object identifier">DOI</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.7717/peerj.7803">10.7717/peerj.7803</a>. <a href="https://en.wikipedia.org/wiki/International_Standard_Serial_Number" class="extiw" title="en:International Standard Serial Number">ISSN</a> <a rel="nofollow" class="external text" href="https://www.worldcat.org/issn/2167-8359">2167-8359</a>.</cite></span>
</li>
<li id="cite_note-8"><span class="mw-cite-backlink"><a href="#cite_ref-8">↑</a></span> <span class="reference-text"><cite class="book" style="font-style:normal">Mateus, Octávio Walen, Aart       <i> <a rel="nofollow" class="external text" href="http://worldcat.org/oclc/1117611182">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</a></i>  <small><a href="https://en.wikipedia.org/wiki/Online_Computer_Library_Center" class="extiw" title="en:Online Computer Library Center">OCLC</a>:   <a rel="nofollow" class="external text" href="https://www.worldcat.org/oclc/1117611182">1117611182</a>. </small></cite></span>
</li>
<li id="cite_note-HMC04-9"><span class="mw-cite-backlink"><a href="#cite_ref-HMC04_9-0">↑</a></span> <span class="reference-text"><cite class="book" style="font-style:normal" id="Reference-Holtz-2004"><a href="//commons.wikimedia.org/w/index.php?title=Thomas_R._Holtz,_Jr.&amp;action=edit&amp;redlink=1" class="new" title="Thomas R. Holtz, Jr. (page does not exist)"> Holtz, Thomas R., Jr.</a> (2004)   Weishampel, David B. , ed.   <i> The Dinosauria</i> (2nd ed.), <a href="https://en.wikipedia.org/wiki/en:Berkeley,_California" class="extiw" title="w:en:Berkeley, California"><span title="city in Alameda County, California, United States">Berkeley</span></a>:  University of California Press, pp. 71–110  <small><a href="https://en.wikipedia.org/wiki/International_Standard_Book_Number" class="extiw" title="en:International Standard Book Number">ISBN</a>:  <a href="//commons.wikimedia.org/wiki/Special:BookSources/0-520-24209-2" title="Special:BookSources/0-520-24209-2">0-520-24209-2</a>. </small></cite></span>
</li>
<li id="cite_note-MMDML03-10"><span class="mw-cite-backlink"><a href="#cite_ref-MMDML03_10-0">↑</a></span> <span class="reference-text">Mortimer, Mickey (<span class="mw-formatted-date" title="2003-07-21">2003-07-21</span>). <a rel="nofollow" class="external text" href="http://dml.cmnh.org/2003Jul/msg00355.html">And the largest Theropod is...</a>. The Dinosaur Mailing List. Retrieved on <span class="mw-formatted-date" title="2007-09-08">2007-09-08</span>.</span>
</li>
<li id="cite_note-JM76-11"><span class="mw-cite-backlink"><a href="#cite_ref-JM76_11-0">↑</a></span> <span class="reference-text"><cite class="book" style="font-style:normal" id="Reference-Madsen-1993">Madsen, James H., Jr. (1993) [1976]      <i> Allosaurus fragilis: A Revised Osteology</i>, Utah Geological Survey Bulletin <b>109</b> (2<sup>nd</sup> ed.), <a href="https://en.wikipedia.org/wiki/en:Salt_Lake_City" class="extiw" title="w:en:Salt Lake City"><span title="city in and county seat of Salt Lake County, Utah, United States and the capital of Utah">Salt Lake City</span></a>:  Utah Geological Survey  <small></small></cite></span>
</li>
<li id="cite_note-12"><span class="mw-cite-backlink"><a href="#cite_ref-12">↑</a></span> <span class="reference-text"><cite style="font-style:normal">Smith, David K. (<span class="mw-formatted-date" title="1998-04-10">1998-04-10</span>). "<a rel="nofollow" class="external text" href="https://dx.doi.org/10.1080/02724634.1998.10011039">A morphometric analysis ofAllosaurus</a>". <i>Journal of Vertebrate Paleontology</i> <b>18</b> (1): 126–142. <a href="https://en.wikipedia.org/wiki/Digital_object_identifier" class="extiw" title="w:Digital object identifier">DOI</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1080/02724634.1998.10011039">10.1080/02724634.1998.10011039</a>. <a href="https://en.wikipedia.org/wiki/International_Standard_Serial_Number" class="extiw" title="en:International Standard Serial Number">ISSN</a> <a rel="nofollow" class="external text" href="https://www.worldcat.org/issn/0272-4634">0272-4634</a>.</cite></span>
</li>
</ol></div>
<a href="//commons.wikimedia.org/wiki/User:Steveoc_86" title="User:Steveoc 86">Steveoc 86</a> <a href="//commons.wikimedia.org/wiki/User:Marmelad" title="User:Marmelad">Marmelad</a> Scott Hartman, <a rel="nofollow" class="external autonumber" href="http://www.skeletaldrawing.com/index.htm">[4]</a>, Henrique Paes <a rel="nofollow" class="external autonumber" href="https://www.deviantart.com/randomdinos">[5]</a>.
CC BY-SA 2.5
File:Allosaurus size comparison.svg is an altered version of an image by <a href="//commons.wikimedia.org/wiki/User:Marmelad" title="User:Marmelad">User:Marmelad</a> which inturn is a vectorized version of an image by <a href="//commons.wikimedia.org/w/index.php?title=User:Dropzink&amp;action=edit&amp;redlink=1" class="new" title="User:Dropzink (page does not exist)">User:Dropzink</a> (seen to the right)  <div class="thumb tright"><div class="thumbinner" style="width:152px;"><a href="//commons.wikimedia.org/wiki/File:Alosizes.svg" class="image"><img alt="Alosizes.svg" src="https://upload.wikimedia.org/wikipedia/commons/thumb/c/cb/Alosizes.svg/150px-Alosizes.svg.png" decoding="async" width="150" height="54" class="thumbimage" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/c/cb/Alosizes.svg/225px-Alosizes.svg.png 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/c/cb/Alosizes.svg/300px-Alosizes.svg.png 2x" data-file-width="765" data-file-height="276"></a>  <div class="thumbcaption"><div class="magnify"><a href="//commons.wikimedia.org/wiki/File:Alosizes.svg" class="internal" title="Enlarge"></a></div></div></div></div> <div class="thumb tright"><div class="thumbinner" style="width:152px;"><a href="//commons.wikimedia.org/wiki/File:Alosizes(v2).png" class="image"><img alt="Alosizes(v2).png" src="https://upload.wikimedia.org/wikipedia/commons/thumb/7/7e/Alosizes%28v2%29.png/150px-Alosizes%28v2%29.png" decoding="async" width="150" height="55" class="thumbimage" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/7/7e/Alosizes%28v2%29.png/225px-Alosizes%28v2%29.png 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/7/7e/Alosizes%28v2%29.png/300px-Alosizes%28v2%29.png 2x" data-file-width="820" data-file-height="300"></a>  <div class="thumbcaption"><div class="magnify"><a href="//commons.wikimedia.org/wiki/File:Alosizes(v2).png" class="internal" title="Enlarge"></a></div></div></div></div>