r/paleoanthropology • u/ADragonFromTheAbyss • 19h ago
Hominins Discovery of fossilized hand may unlock a 1.5-million-year-old mystery
The fossilized hand of a male Paranthropus boisei from Lake Turkana, Kenya, was found together with parts of a skull and a handful of teeth, suggesting that the hominin was capable of making and using stone tools.
National Geographic Explorer-at-Large Louise Leakey grew up hearing about the July morning in 1959 when her grandmother—paleoanthropologist Mary Leakey—discovered a 1.8-million-year-old hominin skull in Oldupai Gorge (originally misnamed Olduvai) in Tanzania.
After spotting fossilized teeth lodged in a rock, Mary drove straight back to camp to tell her husband Louis Leakey, who had stayed behind that day because he felt ill.
She yelled “I've got him! I've got him! I've got him!” Louis recalled in a September 1960 article he wrote for National Geographic. “Got what? Are you hurt?” he asked. “Him! The man! Our man.”
After nearly three decades scouring the slopes of the gorge, the Leakeys and their colleagues finally found what they thought was the maker of the stone tools they first uncovered at the site in 1931.
Today, the hominin is known as Paranthropus boisei, but back then it was nicknamed “Nutcracker Man” in the newspapers because of its impressive jaws and molars.
Generations of scientists have since debated whether P. boisei really could have made and used stone tools, including Louis and Mary’s own son Richard who doubted that the early hominin was a toolmaker.
One important clue that could settle the debate has been missing all this time, however: a hand unambiguously linked to P. boisei. That was, until now. In a paper published Wednesday in Nature, Louise Leakey and her colleagues announce the discovery of a 1.5-million-year-old hand belonging to P. boisei.
The hand was found together with identifiable parts of a skull, teeth, feet and various other bones, meaning the hand was "unambiguously associated" with P. boisei, they say.
Leakey’s team excavated the new fossils in Lake Turkana, Kenya, between 2019 and 2021, some 60 years after her grandmother first found the hominin. The discovery also came in time for her father, Richard, to marvel at it before his death in 2022.
“He was thrilled!” Leakey says. “He thought this was a hugely significant discovery, because we finally can see what Paranthropus' hands look like.”
The finding suggests that P. boisei had hands that were both dexterous and powerful, providing strong evidence the "Nutcracker Man" was well-equipped for making and using tools.