资料来源 : Webster's Revised Unabridged Dictionary (1913)

Polyprotodonta \Pol`y*pro`to*don"ta\, n. pl. [NL., fr. Gr.
   poly`s many + ? first + ?, ?, tooth.] (Zo["o]l.)
   A division of marsupials in which there are more fore incisor
   teeth in each jaw.