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 and morphology== Like its immediate osteostracan ancestors, Ceph..
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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 foot long and had a large, flattened head shield tha
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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

• (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.
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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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