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Re: juvenile bird fossil ref?

David Peters wrote:

"Are juvenile Mesozoic birds often or rarely found as fossils?"

There's also this:

Sanz, J. L., Chiappe, L. M., Fernández-Jalvo, Y., Ortega, F., Sánchez-Chillón, 
B., Poyato-Ariza, F. J., Pérez-Moreno, B. P. 2001. An Early Cretaceous pellet. 
Nature, 409, 998-999.

... which desribes a regurgitated pellet containing four juvenile bird 
skeletons. That they apparently represent three distinct three species suggests 
that whatever animal produced the pellet (suggested to be a theropod or 
pterosaur) was a serial chick murderer. It also prooves that a varied diet has 
always been the way to go, even in the Mesozoic. 


Mark Witton
Palaeobiology Research Group
School of Earth and Environmental Sciences
University of Portsmouth
Burnaby Building
Burnaby Road
Tel: (44)2392 842418
E-mail: Mark.Witton@port.ac.uk