The coelacanth was believed to have gone extinct about 66 million years ago, until one was spotted in South Africa in 1938. Naturalist and museum curator Marjorie Courtenay-Latimer played a key part in that event.
Research:

Elizabeth Peratrovich
43:42

SYMHC Classics: Dr. Lucy Hobbs Taylor
29:58

Behind the Scenes Minis: Carry-on Bags
28:38