Jack Sepkoski American Biologist
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Jack Sepkoski is a member of the following lists: 1948 births, Harvard University alumni and 1999 deaths.
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Details
| First Name |
Jack
|
| Last Name |
Sepkoski
|
| Birthday |
26th July, 1948
|
| Died |
1st May, 1999
|
| Zodiac Sign |
Leo
|
| Nationality |
American
|
| Occupation |
Biologist
|
Joseph John Sepkoski Jr. (July 26, 1948 – May 1, 1999) was a University of Chicago paleontologist. Sepkoski studied the fossil record and the diversity of life on Earth. Sepkoski and David Raup contributed to the knowledge of extinction events. They suggested that the extinction of dinosaurs 66 mya was part of a cycle of mass extinctions that may have occurred every 26 million years.
