Adapted from Page, Roderic D.M. and Holmes, Edward C. <i>Molecular evolution: a phylogenetic approach.</i> Wiley-Blackwell, 1st edition, 1998.
<a href="//commons.wikimedia.org/wiki/User:Ferahgo_the_Assassin" title="User:Ferahgo the Assassin">Ferahgo the Assassin</a>
CC BY 3.0
<span class="int-own-work" lang="en">Own work</span>