<p>There are approximately 320 described species in <span class="taxon">Aplacophora</span>. However, it is likely there are many other species that have not been described.<span> (Brusca and Brusca, 2003; Scheltema, 2001)</span></p>
- Brusca, R., G. Brusca. 2003. Invertebrates. Sunderland, Massachusetts: Sinauer Associates, Inc..