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Re: Nest-depth phylogenetic bracket?
<<I'm looking at a cladogram on the inside cover of _Encyclopedia of
Dinosaurs_. I notice that the only species of non-avian dinosaurs whose
depth is known (Oviraptor and Troodon both lay on the surface) are on
separate branches. Can a phylogenetic bracketting argument be put
forward about the nesting habits of other species above and below them
on thosebranches (including _T. rex_)?>>
Something similiar to this has been done by Weishempal and Horner in
1994 in Dinosaur Eggs and Babies. However, it was not exactly like this
and your idea is more advanced.
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