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Aristotle's lantern in a sea urchin, viewed in lateral section. The mouth of most sea urchins is made up of five calcium carbonate teeth or plates, with a fleshy, tongue-like structure within. The entire chewing organ is known as Aristotle's lantern from Aristotle's description in his History of Animals (translated by D'Arcy Thompson):
In the center of the test, the West African Sand Dollar has a feeding device called “Aristotle’s lantern.” Aristotle’s lantern is a complex system of jaws and muscles which are capable of a variety of feeding types including suspension feeding, herbivory and detritivory feeding, and occasionally predation. Adaptations to this lantern ...
The reef urchin conceals itself in crevices or under boulders. It emerges at night to feed by grazing on algae with its five teeth, part of the Aristotle's lantern organ that surrounds its mouth. [4] It is not believed to bore holes, but its grazing still causes bioerosion in reefs. [5] In Panama, breeding takes place during the period April to ...
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The justices, who heard arguments in the case on Nov. 6, dismissed Facebook's appeal of a lower court's ruling that allowed a 2018 class action led by Amalgamated Bank to proceed. The Supreme ...
As the year comes to a close, experts from the Alzheimer's Association reflect on some of the hopeful advances in diagnosis, treatment and risk management that have been made in 2024.
The mouth (peristome) does not contain an Aristotle's lantern. The anus (periproct) has migrated towards the periphery of the test. ... This page was last edited on ...
NBA coaches ripped the Sacramento Kings over the way they handled the firing of Mike Brown following a slow start to the 2024-25 regular season.