MavicaNET - Priapulida

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Priapulida
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Introduction to the "Aschelminth" Phyla
Acanthocephala -- spiny-headed parasitic worms; about 1150 species known Chaetognatha -- arrowworms; about 70 species known. Cycliophora -- cycliophorans; 1 species known, microscopic Gastrotricha -- gastrotrichs; about 430 species known, all microscopic Kinorhyncha -- kinorhynchs; about 150 species known, all microscopic Loricifera -- loriciferans; about 10 species described, all microscopic Nematoda -- nematodes or roundworms; about 12,000 species known, but an estimated 200,000+ species extant, mostly microscopic Nematomorpha -- horsehair worms; about 320 species known Priapulida -- priapulid worms; 16 species known, abut half microscopic Rotifera -- rotifers or "wheel animalcules"; about 1500 species known, all microscopic [eng]

Priapulida
Description, picture. [eng]

Priapula
Part of tree of Life - Classification from Brusca and Brusca (1990). [eng]

PRIAPULIDA. The Columbia Encyclopedia
Phylum consisting of 17 species of predatory, unsegmented marine worms that live in the sand and mud at the sea bottom. The largest are 4 to 6 in. (10–17 cm) long, but the majority of species are less than .05 in. (.13 cm) in size. The animals consist of a spiny body with an anterior that can be everted or inverted into the trunk for locomotion or feeding. Spines around the mouth and in the pharnyx are everted to capture prey. The sexes are separate and the egg is fertilized externally, hatching into a larval stage in all but one species. [eng]

Literaturliste der Priapulida
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