Cephalaspis

• (n.) 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.
Found on http://thinkexist.com/dictionary/meaning/cephalaspis/

Cephalaspis

Ceph`a┬Ělas'pis noun [ New Latin , from Greek 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.
Found on http://www.encyclo.co.uk/webster/C/45

Cephalaspis

extinct genus of very primitive jawless, fishlike vertebrates found in Early Devonian rocks (the Devonian Period lasted from 408 to 360 million ... [1 related articles]
Found on http://www.britannica.com/eb/a-z/c/46
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