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Gnathostomata

plural noun
Gnatho·​sto·​ma·​ta | \ˌnāthəˈstōmətə, ˌnath-\

Definition of Gnathostomata 

: a superclass or other division of Vertebrata comprising those with jaws — compare agnatha

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History and Etymology for Gnathostomata

New Latin, from gnath- + -stomata

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