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egg taxonomy

How can we be certain about the cladogram into which these eggs fit, if
we don't even know for certain that most of them have the generic affinities
we currently give them.  Did we not learn anything from the Oviraptor's bum
rap?  As I recall, we are only certain about a very few "species" of eggs,
_Maiasaura_, _Hypacrosaurus_, _Oviraptor_, and maybe a very few more 
where fetal dinosaurs remain in the eggs enabling identification.

Bonnie Blackwell,                               bonn@qcvaxa.acc.qc.edu
Dept of Geology,                                (718) 997-3332
Queens College, City University of New York,    fax:  997-3349
Flushing, NY 11367-1597