Reconstruction of female Homo floresiensis (
In 2003, fossils of another island-dwelling species – Homo floresiensis, dubbed the “Hobbit” due to its diminutive size – were unearthed in a cave on the Indonesian island of Flores, some 1,800 miles (3,000 km) from the Luzon site. There is no indication the two species interacted or were closely related.
Homo luzonensis was a contemporary not only of the Hobbit but of our own species, Homo sapiens, which emerged in Africa roughly 300,000 years ago.
The scientists said they could not rule out the possibility that the arrival of our species in the region contributed to the demise of Homo luzonensis. The Hobbit also disappeared about 50,000 years ago at the same time Homo sapiens was spreading through the region.
More clues to human origins
The Luzon and Flores discoveries demonstrate that the story of human evolution is more complicated than previously understood, with Asia offering up surprises, potentially with more to come, the researchers said.
The researchers were circumspect in describing the physical appearance and lifestyle of Homo luzonensis, known only from a sparse assemblage of hand and foot bones, and teeth from two adults and one juvenile, with no skull fossils. Based on tooth size in particular, it appears it might have been much smaller than Homo sapiens, but it is unclear whether it was as little as the Hobbit, which was roughly 3-1/2 feet (1 meter) tall.
“We have to stay cautious about it, especially because people will immediately have Homo floresiensis in mind as a ‘model’ for the physical appearance of Homo luzonensis, which was certainly not the case,” said paleoanthropologist Florent Détroit of the Musée de l’Homme-Muséum National d’Histoire Naturelle in Paris.
“We can only speculate but it might be only in the range of a pygmy Homo sapiens,” added archaeologist Armand Mijares, leader of the Callao Archaeological Project.
The research was published in the
Based on animal bones with butchering marks found at the site, it appears these people ate meat and may have used stone tools, Détroit said.
The fossils from the seven-chamber cave, situated in the foothills of Luzon’s northern Sierra Madre mountains, boasted a combination of anatomical features setting it apart from other human species.
Some characteristics were similar to Homo sapiens as well as the Hobbit. Other traits were so archaic that they resembled Australopithecus, an earlier member of the human evolutionary lineage that died out roughly 2 million years ago, as well as the ancient human species Homo habilis and Homo erectus.
“For years – and until less than 20 years ago – human evolution in Asia was seen as very simple, with Homo erectus going out of Africa, settling in east and southeast Asia, and then nothing happened until the arrival of Homo sapiens at around 40,000 to 50,000 years ago and its ‘conquest’ of every region on Earth,” Détroit said.
“With the discoveries made on the field – fossils – and in the lab, for instance genetics, we now know that it was a much more complex evolutionary history, with several distinct species contemporaneous with Homo sapiens, interbreeding events, extinctions, et cetera,” Détroit added. “Homo sapiens was definitely not alone on Earth.”
source: Nature / DailySabah