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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):
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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.
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 green sea urchin occurs in tropical waters in the western Atlantic Ocean. The subspecies occupy different geographical areas. L. v. variegatus occurs in the Caribbean Sea, southern Florida, the Yucatán peninsula and northern Brazil but not Barbados while L. v. carolinus is found from North Carolina southwards to the Caribbean Sea and Gulf of Mexico.
HBO and DC Studios announced that Aaron Pierre and Kyle Chandler will lead the upcoming "Lanterns" TV show — the first major "Green Lantern" project since Ryan Reynolds' widely panned 2011 movie.
The Echinothuriidae are a family of sea urchins in the order Echinothurioida.Due to their soft skeletons, most are called "leather urchins", but species in the genus Asthenosoma are also known as "fire urchins" due to their bright colors and painful, venomous sting.
Our country's pumpkin-carving history began with a spooky tale. The post The History of Jack-o-Lanterns and How They Became a Halloween Tradition appeared first on Reader's Digest.