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gnathostome

   Also found in: Encyclopedia, Wikipedia 0.04 sec.
gnathostome [ˈneɪθəʊˌstəʊm]
n
(Life Sciences & Allied Applications / Zoology) any vertebrate of the superclass Gnathostomata, having a mouth with jaws, including all vertebrates except the agnathans
[from New Latin Gnathostomata, from Greek gnathos jaw + stoma mouth]
gnathostomatous  adj
ThesaurusLegend:  Synonyms Related Words Antonyms
Noun1.gnathostome - a vertebrate animal possessing true jaws
craniate, vertebrate - animals having a bony or cartilaginous skeleton with a segmented spinal column and a large brain enclosed in a skull or cranium
Gnathostomata, superclass Gnathostomata - comprising all vertebrates with upper and lower jaws


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? Mentioned in ? References in periodicals archive
 
After some gnathostomes emerged from the sea to dwell on land, the gill arches that did not form the jaw developed to form the tongue, the thyroid cartilage, the cricoid cartilage, and the structures of the pharynx and hypopharynx.
Phylogeny and embryology of the facial nerve and related structures. ... by Selber, Jesse C. / Ear, Nose and Throat Journal
Other paleontologists, however, argue that gnathostomes may not have evolved that early.
The first shark: to bite or not to bite? by Monastersky, Richard / Science News
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