Cephalaspis(redirected from Cephalapsis)
|n.||1.||(Paleon.) A genus of fossil ganoid fishes found in the old red sandstone or Devonian formation. The head is large, and protected by a broad shield-shaped helmet prolonged behind into two lateral points.|
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.