phylum Chaetognatha


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Noun1.phylum Chaetognatha - arrowworms: a group of small active transparent marine wormsphylum Chaetognatha - arrowworms: a group of small active transparent marine worms
animal kingdom, Animalia, kingdom Animalia - taxonomic kingdom comprising all living or extinct animals
arrowworm, chaetognath - any worm of the Chaetognatha; transparent marine worm with horizontal lateral and caudal fins and a row of movable curved spines at each side of the mouth
genus Sagitta - chief genus of Chaetognatha including the largest arrowworms
genus Spadella - marine worms resembling the sagittas but with a broader body and only one pair of lateral fins
phylum - (biology) the major taxonomic group of animals and plants; contains classes
References in periodicals archive ?
The importance of bioluminescence in the ocean is underscored by the fact that almost all marine animal phyla have members that possess the ability to produce light (Shimomura, 2006; Haddock et al., 2010), and the marine phylum Chaetognatha is no exception.
Na-channel-based excitability in invertebrate muscle fibers was previously reported to exist only in the phylum Chaetognatha (comprising the "arrow worms", ref.