English

Noun

gnathostome ‎(plural gnathostomes)

1. (zoology) Any vertebrate with jaws, including amphibians, reptiles, mammals, and most modern fish.
   • 2009 January 15, Martin D. Brazeau, “The braincase and jaws of a Devonian 'acanthodian' and modern gnathostome origins”, Nature Volume 457 No. 7227, doi:10.1038/nature07436: 

     Current conceptions of gnathostome phylogeny depict a rather simplistic arrangement of nominally monophyletic and, apparently, morphologically disparate groups.