dinasours couldn't get into space for whatever reason. maybe too slow & clumsy because they were cold-blooded
How do you know that? Star Trek Voyager episode "Distant Origin"
Voyager encounters an alien race, but runs afoul of their principles. The Voth are sort of humanoid lizards, and the plot revolves around one particular scientist that has taken an interest in studying Voth origins.
Turns out that the Voth evolved on Earth to be a space fairing species before the great extinction event. They left Earth and arrived at a habitable planet in the Delta quadrant. It became their belief that they originated and evolved on that planet. Hence the conflict when Voyager encountered the Voth with evidence otherwise. (And the evolved-here Vothians won by forcing dissenting Vothians to recant.)
BTW Some would say birds are warm blooded dinosaurs.
The key elements in human thinking are not numbers but labels of fuzzy sets. -- L. Zadeh
