After that I left for Johns Hopkins University in Baltimore, where I taught anatomy to pre-med students. I left that job in 1982.
Also, while I was at Yale, I had a job teaching kids at the museum.
As an undergraduate I held many small jobs as an illustrator.
At Harvard I was in charge of the comparative anatomy labs.
At the end of the Cretaceous, though, oceans were changing and this was non related to the land extinctions caused by disease.
Birds evolved from a small raptor like theropod.
Feathers predate birds.
I also discovered the only complete Brontosaurus skull.
I also got a chance to go to the American Museum in New York, which helped my interest.
I do point to disease. When big animals are spreading and mixing extinction occur. You can see this with elephants.
I want to be the Bob DeNiro of the Jurassic.
In 1941 Richard Owen said that the dinosaurs were almost hot blooded.
It was not an asteroid or comet, because it would have killed everything.
Land bridges were everywhere during the extinction, many species were spreading, and there were many diseases.
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.
One of my major goals is to develop a web of the small Wyoming museums and create a major museum system. There are about eight of these museums, and they are all scattered.
One researcher just determined that African and Indian elephants make each other sick. When a new animal or plant is introduced to a habitat bad things happen. The biggest danger to native wildlife is foreign wildlife.
Since then I have held many jobs at museums in Colorado and Wyoming. I have also taught summer courses at the University of Colorado.
Stegosaurus was common only on well drained, dry soil.
The impact of the magazine was very strong. As I said, it portrayed dinosaurs as part of the geological history, part of the story of life on earth. It struck that paleontology was the career for me.
To me it seems that the warm blooded dinosaurs replaced advanced mammal ancestors that were warm blooded, also.
We have found some totally aquatic dinosaurs, dinosaurs that preferred wet habitats, and others that only lived in trees.
When looking at the evidence of feeding on large prey, you can see every size tooth from hatchling to adult in one spot. The babies may have been fed in the nest until they were full grown, like in eagles and hawks.
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