<p><strong>Fig. 3.89.</strong> (<strong>C</strong>) Oral surface of a purple sea urchin (<em>Strongylocentrotus purpuratus</em>) showing the five tooth-like structures of the Aristotle’s lantern mouthparts, tube feet, and spines.</p>

Fig. 3.89. (C) Oral surface of a purple sea urchin (Strongylocentrotus purpuratus) showing the five tooth-like structures of the Aristotle’s lantern mouthparts, tube feet, and spines.

Image courtesy of Mark A. Wilson, Department of Geology, College of Wooster