The extinction of small dinosaurs

["Dino Beast" <dino_beast@hotmail.com>]

I can understand the effect of climate change, volcano activities and 
asteriod hit etc causing the extinction of large sized dinosaurs but why it 
also caused extinction of smaller dinosaurs, typically like maniraptoran ??

> From the discovery of feathers / proto-feathers we think coelurosaurs are 
endothermic.  On top of that they are agile with varied diet (by studying 
different shape of teeth) and lived in varied environment (arboreal and 
terrestrial).  What makes them different to birds and mammals which survive 
thru' K-T ??  We may say bird can fly but this is not the case of mammals 
...

Sounds speculative but really like to hear some opinion.



_________________________________________________________________
Tired of spam? Get advanced junk mail protection with MSN 8. 
http://join.msn.com/?page=features/junkmail