Gnathostome

Origin

- + stome + -

Full definition of gnathostome

Noun

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.