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Loricifera

Loricifera (lôr´ĬsĬf´ərə), phylum of microscopic animals discovered in 1974. They have spiny heads and unsegmented bodies encased in a vase-shaped anterior that can retract into the posterior trunk. Although research shows that the sexes are separate and they have a large brain, little else is known about them. Because they adhere tightly to the marine gravel or sand in which they live, they are difficult to extract. They hatch as a larval stage, undergo several molts, and reach adult stage. As with the Gnathustomulida, this may account for their late discovery. Locierans appear to be most closely related to the kinorhynchs (Kinorhyncha) and priapulids.

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Loricifera

Loricifera A phylum, first described in 1983 by R. M. Kristensen, of animals only 0.25 mm long that live in marine gravel. The body bears a cuticle of four plates (one dorsal, one ventral, two lateral) and has recurved spines on the anterior end. The anus is terminal. Sexes are separate; larvae resemble small adults. The phylum appears to be related to the Priapulida (priapus worms) and Kinorhyncha.

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"Loricifera." A Dictionary of Zoology. . Encyclopedia.com. 17 Aug. 2017 <http://www.encyclopedia.com>.

"Loricifera." A Dictionary of Zoology. . Encyclopedia.com. (August 17, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/loricifera

"Loricifera." A Dictionary of Zoology. . Retrieved August 17, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/loricifera