Quantum redactiones paginae "Craniata" differant

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* Gee, H. (1996). Before the backbone. Chapman & Hall, London.
* Hardisty, M. W. (1982). Lampreys and hagfishes: Analysis of cyclostome relationships. In The Biology of Lampreys, (ed. M. W. Hardisty and I. C. Potter), Vol.4B, pp. 165-259. Academic Press, London.
* [[Philippe Janvier|Janvier, P.]] (1981). The phylogeny of the Craniata, with particular reference to the significance of fossil 'agnathans'. Journal of Vertebrate Paleontology, 1, 121-159.
* Janvier, P. (1993). Patterns of diversity in the skull of jawless fishes. In The skull (ed. J. Hanken and B. K. Hall), Vol. 2, pp. 131-188. The University of Chicago Press.
* Janvier, P. (1996a). The dawn of the vertebrates: characters versus common ascent in current vertebrate phylogenies. Palaeontology, 39, 259-287.