Gnathostomata

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Gnathostomata

[‚nā·thə′stō·məd·ə]
(invertebrate zoology)
A suborder of echinoderms in the order Echinoidea characterized by a rigid, exocyclic test and a lantern or jaw apparatus.
(vertebrate zoology)
A group of the subphylum Vertebrata which possess jaws and usually have paired appendages.

Gnathostomata

 

higher vertebrates having jaws, paired nostrils, and paired limbs. The Gnathostomata include fish, amphibians, reptiles, birds, and mammals.

References in periodicals archive ?
Support for the forebrain in gnathostomes is provided by the paired polar bodies and anterior trabeculae.
Other paleontologists, however, argue that gnathostomes may not have evolved that early.