<i>Acervularia troscheri</i> fossil (Silurian-Devonian), in a laboratory of practices of the Faculty of Sciences of the University of <a href="//commons.wikimedia.org/wiki/A_Coru%C3%B1a" title="A Coruña">Corunna</a>.
<a href="//commons.wikimedia.org/wiki/User:Drow_male" title="User:Drow male">Fernando Losada Rodríguez</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>