Source : Webster's Revised Unabridged Dictionary (1913)

Odontornithes \O*don`tor*ni*"thes\, n. pl. [NL., fr.Gr. 'odoy`s,
   'odo`ntos, a tooth + ?, ?, a bird.] (Paleon.)
   A group of Mesozoic birds having the jaws armed with teeth,
   as in most other vertebrates. They have been divided into
   three orders: Odontolc[ae], Odontotorm[ae], and Saurur[ae].