Epiplastra

from The Collaborative International Dictionary of English v.0.48

Epiplastron \Ep`i*plas"tron\, n.; pl. {Epiplastra}. [Pref. epi-
   + plastron.] (Anat.)
   One of the first pair of lateral plates in the plastron of
   turtles.
   [1913 Webster]