Size diagram comparing estimated adult size and <i>Macroelongatoolithus</i> eggs of the gigantic Late Cretaceous caenagnathid <i>Beibeilong sinensis</i>, to a 1.8 m (5.9 ft) tall human. It is estimated that it reached a length of about 7.5 m (25 ft),<sup id="cite_ref-1" class="reference"><a href="#cite_note-1">[1]</a></sup> and the eggs measure around 40–45 cm (16–18 in) long.<sup id="cite_ref-2" class="reference"><a href="#cite_note-2">[2]</a></sup><h4><span class="mw-headline" id="References">References</span></h4>
<ol class="references"><li id="cite_note-1"><span class="mw-cite-backlink"><a href="#cite_ref-1">↑</a></span> <span class="reference-text"><cite class="book" style="font-style:normal">"Beibeilong" in   (2018) <i> <a rel="nofollow" class="external text" href="http://www.robertsquier.com/blog/2018/9/3/big-bird">Highlights</a></i>, pp. 13  <small></small></cite></span>
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<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"> (2017). "<a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5477524">Perinate and eggs of a giant caenagnathid dinosaur from the Late Cretaceous of central China</a>". <i>Nature Communications</i> <b>8</b>. <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/10.1038/ncomms14952">10.1038/ncomms14952</a>. <a href="https://en.wikipedia.org/wiki/PMID" class="extiw" title="w:PMID">PMID</a> <a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/pubmed/28486442">28486442</a>. <a href="https://en.wikipedia.org/wiki/PubMed_Central" class="extiw" title="w:PubMed Central">PMC</a>: <a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5477524">5477524</a>.</cite></span>
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