Ammonite <i><a href="//commons.wikimedia.org/w/index.php?title=Goniatites_plebeiformis&amp;action=edit&amp;redlink=1" class="new" title="Goniatites plebeiformis (page does not exist)">Goniatites plebeiformis</a></i> showing Goniatitic suture
<a href="//commons.wikimedia.org/wiki/User:Chiswick_Chap" title="User:Chiswick Chap">Ian Alexander</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>