<a href="https://en.wikipedia.org/wiki/Cambrian_substrate_revolution" class="extiw" title="en:Cambrian substrate revolution">en:Cambrian substrate revolution</a> mark 2, showing more of pre-CSR biota. For use with <a href="https://en.wikipedia.org/wiki/Template:Annotated_image" class="extiw" title="en:Template:Annotated image">en:Template:Annotated image</a>
<a href="https://en.wikipedia.org/wiki/User:Philcha" class="extiw" title="en:User:Philcha">Philcha</a> (<a href="https://en.wikipedia.org/wiki/User_talk:Philcha" class="extiw" title="en:User talk:Philcha">talk</a>)
<span class="int-own-work" lang="en">Own work</span> (<span lang="en" dir="ltr">Original text: <i><bdi lang="">I created this work entirely by myself.</bdi></i></span>)