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Summary
DescriptionAcanthodes BW spaced.jpg
English: Acanthodes bronni, an acanthodian from the Early Permian of Germany, pencil drawing
Ref : Janvier, P. (2001) "Ostracoderms and the shaping of gnathostome characters" in Ahlberg, P.E. , ed. Major Events in Early Vertebrate Evolution: Palaeontology, Phylogeny, Genetics and Development, CRC Press, p. 175 ISBN: 0415233704.
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13 August 2013
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