<p>Asterisk (*) indicates that eggshell thickness was taken from Zhao [<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0142829#pone.0142829.ref043" target="_blank">43</a>] because Mou [<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0142829#pone.0142829.ref041" target="_blank">41</a>] provided only the thickness of the continuous layer as pore length.</p><p>List of extinct archosaur taxa/ootaxa with estimated egg mass (M) and eggshell porosity (A<sub>p</sub>∙Ls-1) used in this study.</p