Source : Webster's Revised Unabridged Dictionary (1913)

Pelicosauria \Pel`i*co*sau"ri*a\, n. pl. [NL., fr. Gr. ? a
   wooden bowl (but taken to mean, pelvis) + ? a lizard.]
   (Paleon.)
   A suborder of Theromorpha, including terrestrial reptiles
   from the Permian formation.