![]() | Giant Sloths and Sabertooth Cats Donald K. Grayson is a professor in the Department of Anthropology and the Quaternary Research Center at the University of Washington. He is a recipient of the Nevada Medal for scientific achievement and a member of the National Academy of Sciences. His publications include The Desert's Past and The Great Basin: A Natural Prehistory. |
![hidden image for function call](https://upload.wikimedia.org/wikipedia/commons/c/ca/1x1.png)