Sonoma State University
September 16, 1985

the Asteroid and the Dinosaur

Ms. Helen V. Michel
Lawrence Berkeley Laboratory, University of California

Darwin 103
4:00 PM

Ms. Helen V. Michel, Staff Scientist at Lawrence Berkeley Laboratory, University of California will present a theory contending that the dinosaurs as well as most other life forms of the cretaceous period became extinct due to the impact of a large asteroid. The periodic nature of mass extinctions and comet impacts will also be discussed.