Drawing of apertural view of the shell of <i>Bivetiella cancellata</i> (synonym:  <i>Cancellaria cancellata</i>)
Regina L. Cunha, Cristina Grande &amp; Rafael Zardoya
CC BY 2.0
Cunha R. L., Grande C. &amp; Zardoya R. (2009). "Neogastropod phylogenetic relationships based on entire mitochondrial genomes". <i>BMC Evolutionary Biology</i> <b>9</b>:210. <a href="//doi.org/10.1186/1471-2148-9-210" class="extiw" title="doi:10.1186/1471-2148-9-210">doi:10.1186/1471-2148-9-210</a>. Figure 3.