Photo of an apical view of a shell of <i>Indoplanorbis exustus</i>.
Peter Glöer &amp; Vladimir Pešić
CC BY 3.0
Glöer P. &amp; Pešić V. (2012). "The freshwater snails (Gastropoda) of Iran, with descriptions of two new genera and eight new species". <i>ZooKeys</i> <b>219</b>: 11-61, <a href="https://en.wikipedia.org/wiki/Digital_object_identifier" class="extiw" title="w:Digital object identifier">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.3897%2Fzookeys.219.3406">10.3897/zookeys.219.3406</a>. Figure 18c.