I also got a chance to go to the American Museum in New York, which helped my interest.
Birds evolved from a small raptor like theropod.
At Harvard I was in charge of the comparative anatomy labs.
In 1941 Richard Owen said that the dinosaurs were almost hot blooded.
Since then I have held many jobs at museums in Colorado and Wyoming. I have also taught summer courses at the University of Colorado.
Often extinctions in the ocean occur at the same time as those on land. Then again, the ice age extinctions lost many big animals, but not many sea faring ones.