Members of this phylum are marine worms less than 1mm long. They have no body cavity but do have a pair of jaws which gives them their name (gnathos is Greek for jaws) and a blind gut with a mouth but no anus. They are very common in marine sediments where they eat bacteria, fungi and protists, and there are about 80 known species.

Related categories 1

Phylum Gnathostomulida
Images of some members of this taxonomic group.
The Sand Worms (Phylum Gnathostomula)
Description of the tiny marine worms in this phylum and the characteristics that distinguish them from other worms.
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Last update:
March 15, 2015 at 19:16:01 UTC
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