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[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):
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]
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.
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
Page one of Aristotle's On the Heavens, from an edition published in 1837. On the Heavens (Greek: Περὶ οὐρανοῦ; Latin: De Caelo or De Caelo et Mundo) is Aristotle's chief cosmological treatise: written in 350 BCE, [1] it contains his astronomical theory and his ideas on the concrete workings of the terrestrial world.
The works of Aristotle, sometimes referred to by modern scholars with the Latin phrase Corpus Aristotelicum, is the collection of Aristotle's works that have survived from antiquity. According to a distinction that originates with Aristotle himself, his writings are divisible into two groups: the " exoteric " and the " esoteric ". [ 1 ]
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 ...
On Colors (Greek Περὶ χρωμάτων; Latin De Coloribus) is a treatise attributed to Aristotle [1] but sometimes ascribed to Theophrastus or Strato.The work outlines the theory that all colors (yellow, red, purple, blue, and green) are derived from mixtures of black and white.