What is "gnathostoma"

Gnathostoma \Gna*thos"to*ma\, n. pl. [NL., from Gr. gna`qos the jaw + ?, ?, the mouth.] (Zo["o]l.) A comprehensive division of vertebrates, including all that have distinct jaws, in contrast with the leptocardians and marsipobranchs (Cyclostoma), which lack them. [Written also Gnathostomata.]

Gnathostoma might be referring to:

• Gnathostomata, a superclass of vertebrates (those with jaws), Gnathostoma being the singular form.
• Gnathostoma, a genus of endoparasites

Not to be confused with Gnathostomata (singular: Gnathostoma), a Vertebrate Superclass.

Gnathostoma is a genus of parasitic nematodes. The species Gnathostoma spinigerum and Gnathostoma hispidum can cause gnathostomiasis.