File:Origin of Vertebrates Fig 127.png

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English: Fig. 127.—A, Dorsal Head-Shield of Cephalaspis (from Lankester); B, Dorsal Head-Shield of Keraspis (from Lankester).


The name Keraspis (correctly Ceraspis) was preoccupied. The replacement name is Grossaspis.
Date
Source The Origin of Vertebrates. https://archive.org/details/originofvertebra1908gask
Author Walter Holbrook Gaskell.


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The author died in 1914, so this work is in the public domain in its country of origin and other countries and areas where the copyright term is the author's life plus 100 years or fewer.


This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1929.

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current21:05, 10 November 2013Thumbnail for version as of 21:05, 10 November 20131,456 × 857 (70 KB)Keith Edkins (talk | contribs)== {{int:filedesc}} == {{Information |Description={{En|Fig. 127.—A, Dorsal Head-Shield of Cephalaspis (from Lankester); B, Dorsal Head-Shield of Keraspis (from Lankester).}} |date=1908 |Source=The Origin of Vertebrates. https://archive.org/details/or...

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