I like this little critter<quoted text>
The reasons why dinosaurs bacame dominant, is another great debate in itself. During the Triassic extinction event, the dinosaurs had a small, but adaptle player in the field: Coelophysis. I believe that that is the very animal that heralded in the dinosaurs as the dominant life forms on earth.
hero of the Permian extinction.
Perhaps there is a lot of luck involved at these pivotal points...and a tiny advantage can become leveraged massively as it compounds over time. Think Microsoft.