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 ?
In gnathostomes, the mandibular arch forms the bones of the primitive jaw itself.
He asks why, if gnathostomes existed in the Ordovician, scientists haven't found complete fossils of these animals.
In fact, functional evidence for different aspects of this putative network often conflicts between gnathostome models.
To address the question of whether deployment and function of lamprey cognates of gnathostome neural crest genes are evolutionarily conserved, we performed moderate-throughput transcriptome analysis, identifying more than 50 genes involved in neural crest formation in lamprey.
Thus, it is likely that these genes have been co-opted to an earlier function in the gnathostome lineage or have lost their early specification function in lampreys.
Myelin basic proteins (MBPs) are abundant in the myelin sheaths of gnathostome central nervous system (CNS) and peripheral nervous system (PNS) (Waehneldt et al.
2004), and antibody-mediated immunity (Klein and Nikolaidis, 2005), preexisting pieces were connected into the myelination process by gnathostome ancestors.