In 1959, excavations at Bed I were opened. While Louis was sick in camp, Mary discovered the fossilized skull OH 5 at FLK, "Paranthropus boisei", famously identified as ""Zinjanthropus"" or "Zinj." The question was whether the fossil belonged to a previous genus discovered by Robert Broom, "Paranthropus", or a member of a different genus ancestral to humans. Louis opted for "Zinjanthropus", a decision opposed by Wilfrid Le Gros Clark, but one which attracted the attention of Melville Bell Grosvenor, president of the National Geographic Society. That contact resulted in an article in "National Geographic" and a large grant to continue work at Olduvai.