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In page Mary Leakey:

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While her husband was alive, they published many joint findings. However, her contributions were often credited to her husband.[4] Louis Leakey died on 1 October 1972 of a heart attack. Mary Leakey continued with the family's archaeological work, becoming a respected figure in paleoanthropology in her own right. Her son, Richard Leakey, also decided to become a paleoanthropologist, and Mary helped him begin his career. Her other two sons, Jonathan and Philip Leakey, pursued other interests.[citation needed]