Cephalaspis

1 definition found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Cephalaspis \Ceph`a*las"pis\, n. [NL., fr. Gr. kefalh` head + ?
     a shield.] (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.


     [1913 Webster]