It was not an asteroid or comet, because it would have killed everything.
Also, while I was at Yale, I had a job teaching kids at the museum.
Stegosaurus was common only on well drained, dry soil.
As an undergraduate I held many small jobs as an illustrator.
At Harvard I was in charge of the comparative anatomy labs.
I also got a chance to go to the American Museum in New York, which helped my interest.
I also discovered the only complete Brontosaurus skull.
The evidence is overwhelming that birds are dinosaurs.
You could arm-wrestle with a T. rex and win, but you shouldn’t because it only makes them mad.
In 1941 Richard Owen said that the dinosaurs were almost hot blooded.