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Beak-thrower Worm (Family: Glyceridae) - Wiki
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Glyceridae
From Wikipedia, the free encyclopedia
[Photo] Glycera alba with everted proboscis. By Hans Hillewaert. From the Belgian continental shelf.
Glyceridae is a taxonomic family of worms. They are commonly referred to as beak -thrower worms.
Characteristics
Pointy snout used for burrowing in sediment
No septa in anterior part of bodies
Rely on peristalsis to move
Explosively evert pharynx into sediment, anchor position with prostomium and pull body forward.
Eversible pharynx also used in prey capture: 4 poisonous fangs
http://en.wikipedia.org/wiki/Glyceridae
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동물그림창고 똑똑전화 누리집
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