Size chart comparison between the largest described dromaeosaurid species until now:
<ul><li><span style="line-height:1.7;padding:0 .6em;margin-right:-1px;border:1px solid #808080;background: #a77f3e" title="#a77f3e"> </span> <i>Achillobator giganticus</i> → Bayan Shireh Formation. Length = 5 meters.<sup id="cite_ref-Paul2016_1-0" class="reference"><a href="#cite_note-Paul2016-1">[1]</a></sup></li>
<li><span style="line-height:1.7;padding:0 .6em;margin-right:-1px;border:1px solid #808080;background: #8a3b20" title="#8a3b20"> </span> <i>Dakotaraptor steini</i> → Hell Creek Formation. Length = 5.5 meters.<sup id="cite_ref-2" class="reference"><a href="#cite_note-2">[2]</a></sup></li>
<li><span style="line-height:1.7;padding:0 .6em;margin-right:-1px;border:1px solid #808080;background: #560000" title="#560000"> </span> <i>Utahraptor ostrommaysi</i> → Cedar Mountain Formation. Length = 5.5 meters.<sup id="cite_ref-Paul2016_1-1" class="reference"><a href="#cite_note-Paul2016-1">[1]</a></sup></li></ul><p>Human for scale is 1.8 meters tall.
</p>
<h4><span class="mw-headline" id="References">References</span></h4>
<ol class="references"><li id="cite_note-Paul2016-1"><span class="mw-cite-backlink">↑ <a href="#cite_ref-Paul2016_1-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-Paul2016_1-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><cite class="book" style="font-style:normal">(2016) <i> The Princeton Field Guide to Dinosaurs</i> (2nd ed.), <a href="https://en.wikipedia.org/wiki/en:Princeton,_New_Jersey" class="extiw" title="w:en:Princeton, New Jersey"><span title="municipality in Mercer County, New Jersey, United States">Princeton</span></a>:  Princeton University Press, pp. 151  <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/9780691167664" title="Special:BookSources/9780691167664">9780691167664</a>. </small></cite></span>
</li>
<li id="cite_note-2"><span class="mw-cite-backlink"><a href="#cite_ref-2">↑</a></span> <span class="reference-text"><cite style="font-style:normal"> (2015). "<a rel="nofollow" class="external text" href="https://kuscholarworks.ku.edu/handle/1808/18764">The First Giant Raptor (Theropoda: Dromaeosauridae) from the Hell Creek Formation.</a>". <i>Paleontological Contributions</i> (14). <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/10.17161/paleo.1808.18764">10.17161/paleo.1808.18764</a>.</cite></span>
</li>
</ol>
<a href="//commons.wikimedia.org/wiki/User:PaleoNeolitic" title="User:PaleoNeolitic">PaleoNeolitic</a>
<span class="int-own-work" lang="en">Own work</span>