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.
Robert T. BakkerSince then I have held many jobs at museums in Colorado and Wyoming. I have also taught summer courses at the University of Colorado.
Robert T. BakkerOne 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.
Robert T. Bakker