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The green sea urchin has a structure called an Aristotle's lantern surrounding its mouth on its oral (under) surface. This has five teeth that can be used to rasp surfaces. It is largely herbivorous, feeding on the seagrass Thalassia. Its tube feet and spines also play a role in feeding, catching and holding bits of debris that float past. [4]
[2] 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):
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 have allowed sand dollars to live in habitats which have fine, shifting substrates.
Other large specialist plates surround the mouth in a set of jaws known as Aristotle's lantern. [4] Sea stars have separate plates giving flexibility to the disc and arms. They are arranged into interambulacral and ambulacral regions and the arms have an ambulacral groove on the underside from which the tube feet project.
The World Echinoidea Database recognises these genera: [3] Subfamily Echinothuriinae Thomson, 1872a. genus Araeosoma Mortensen, 1903b - 19 current species and two fossils; genus Asthenosoma Grube, 1868 - six current species and one fossil; genus Calveriosoma Mortensen, 1934 - two species; genus Hapalosoma Mortensen, 1903b - four species
Echinothurioids are nearly all found on the seabed at abyssal depths, but by way of an exception, Asthenosoma ijimai is found in shallow water. [2] Because of the difficulty in studying these echinothurioids at such depths, little is known of their feeding habits, but examination of their stomach contents suggests they eat detritus , mostly in ...
Some animals like horses and dogs remain very strong despite their white color. Pseudo-Aristotle, de Coloribus 6.3 Creatures are born black because they are born with sustenance from the start but they will still darken further when they reach their prime when the heat within them is at its strongest. Pseudo-Aristotle, de Coloribus 6.4 [2]
On Plants (Greek: Περὶ φυτῶν; Latin: De plantis) is a botanical treatise included in the Corpus Aristotelicum but usually regarded as Pseudo-Aristotle. [1] In 1923, a manuscript containing the original Arabic translation from Greek, as done by Ishaq ibn Hunayn, was discovered in Istanbul, which led scholars to conclude the work was likely an exegesis/commentary by philosopher ...