Look up: cephalaspis

1. Cephalaspis
   Cephalaspis meaning head shield) was a genus of primitive, jawless, armored, fresh-water fish that lived during the Silurian-Devonian periods (over 340 million years ago). Cephalaspis is the oldest known animal vertebrate (an animal having a backbone). This extinct group of fish were less than an fo...
   Found on http://www.enchantedlearning.com/subject
   
   
2. Cephalaspis
   Ceph`a·las'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
   
   
3. 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
   
   
4. 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
   
   
5. Cephalaspis
   `Cephalaspis` ("Head Shield") was a genus of armored goldfish-sized to trout-sized detritivorous fish that lived in freshwater streams and estuaries of early Devonian Western Europe. It is a member of the Osteostraci, one of many groups of Palaeozoic armoured jawless fish. Anatomy a...
   Found on http://en.wikipedia.org/wiki/Cephalaspis