Donald Johanson Quotes
But it really wasn't until three to four years later, when we had an opportunity in the lab to make very detailed observations, and comparisons with other fossil discoveries, that we realized she was a new species of human ancestor. 
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Years | Opportunity | Detailed | Observations | Comparisons |
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I think that many of my ideas are correct, but I'll bet you, before my death other discoveries will be made that will prompt me to alter various ideas I have about human evolution.
- Donald Johanson
