A conical structure of calcareous plates and muscles supporting the rasping teeth of a sea urchin.
- ‘The mouth of most echinoids is provided with five hard teeth arranged in a circlet, forming an apparatus known as Aristotle's lantern.’
- ‘The mouth, in the peristomal membrane, contains a powerful chewing apparatus called the Aristotle's lantern.’
- ‘Many have a group of hard plates which retract and grasp like teeth, commonly called Aristotle's lantern.’
- ‘Organisms in and on the sand grains are manipulated towards the mouth along the food grooves, and then exposed and/or macerated by the crushing action of the Aristotle's lantern.’