The Collaborative International Dictionary of English v.0.48:

Phocodontia \Pho`co*don"ti*a\ (f[=o]`k[-o]*d[o^]n"sh[i^]*[.a]),
   n. pl. [NL., fr. Gr. fw`kh a seal + 'odoy`s, 'odo`ntos, a
   tooth.] (Zool.)
   A group of extinct carnivorous whales. Their teeth had
   compressed and serrated crowns. It includes Squalodon and
   allied genera.
   [1913 Webster]