A shell of female pelagic cephalopod <i>Argonauta nodosa</i> which serves as an eggcase. A drawing by Niccolò Gualtieri (1742).
<a href="https://en.wikipedia.org/wiki/Niccol%C3%B2_Gualtieri" class="extiw" title="en:Niccolò Gualtieri">Niccolò Gualtieri</a>
1742
<i>Index Testarum Conchyliorum</i> (1742) of Niccolò Gualtieri.