monocondyla

from The Collaborative International Dictionary of English v.0.48

Monocondyla \Mon`o*con"dy*la\, n. pl. [NL. See {Mono-}, and
   {Condyle}.] (Zool.)
   A group of vertebrates, including the birds and reptiles, or
   those that have only one occipital condyle; the Sauropsida.
   [1913 Webster]