from the GNU version of the Collaborative International Dictionary of English
- 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.
from The Century Dictionary and Cyclopedia
- n. A genus of fossil fishes, typical of the family Cephalaspididæ.
Sorry, no etymologies found.