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archeopteryx teeth

I seem to remember an interesting paper a few years back, written by
some embryologists who grafted mouse gum mesoderm under chicken
oral ectoderm and induced the formation of a hen's tooth from the avian
ectoderm.  They went on to describe the morphology of the tooth, which
bore no resemblance to that of a mouse.  Does anyone else remember
this paper?  If so, how does the morphology of this induced tooth
compare to that of Archeopteryx or its relatives?

James M. Norton, Ph.D.