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Re: Tyrannosaur eggs and evolution



 > 
 > The null hypothesis, on phylogenetic basis, is that all dinosaurs used some
 > degree of parental care, as both the in-group (birds) and the closest
 > surviving outgroup (crocodillians) protect the nest and the young for some
 > duration.

This is also why I have concluded that all dinosaurs probably had
a functionally four-chambered heart.

swf@elsegundoca.attgis.com              sarima@netcom.com

The peace of God be with you.