On December 2, 1929, the first fossil hominin skullcap of Homo erectus pekinensis - an example of Homo erectus - estimated to be up to half a million years old, was discovered during excavations at Zhoukoudian, 40 kilometers southwest of Beijing.



The work at Zhoukoudian was carried out under hardy conditions, with scientists having to ride there on mules, and the skull was found by 25-year-old Chinese archaeologist Pei Wenzhong, “working in a 40-meter crevasse in frigid weather with a hammer in one hand and a candle in the other.”

The excavations uncovered a total of 200 fossils from more than 40 individual specimens, including six skullcaps, before coming to an abrupt end in 1937 with the Japanese invasion of China. The fossils were then placed in a safe at Peking Union Medical College, before being packed up in 1941 to be sent to the American Museum of Natural History in New York for safekeeping.

However, they mysteriously vanished en route to the northern port of Qinhuangdao.

Theories as to their fate abound. Some believe they were sold to apothecary shops and ground up for traditional medicine as ‘dragon bones’. Others say that they were captured by the Japanese and sank with the ship Awa Maru in 1945.

In 1972, an American woman claimed to have a box full of skulls that her husband brought home after the end of WW2. She met with a US broker on top of the Empire State Building demanding USD500,000 for them, showed him a photo of the box… and then disappeared.

To this day, Pei’s Peking Man remains one of science's most important missing persons.

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