Scientists uncover new evidence linked to Indonesia’s ‘Hobbit’ species

Fossilized bone fragments discovered at Mata Menge on Indonesia’s Flores Island have provided new insights into the origins of Homo floresiensis, the tiny extinct species nicknamed “The Hobbit.”

Originally thought to be a crocodile bone, the fragments were later identified as part of the upper arm bone, or humerus, of an adult Homo floresiensis, dating to about 700,000 years ago.

The discovery, announced by scientists on Tuesday, includes the smallest limb bone known for any member of the human evolutionary line and two fossilized teeth.

This marks the first time a Hobbit bone beyond the skull has been identified at the Mata Menge site, located in the So’a Basin near Ebulobo Volcano.

Researchers estimate the individual was about 3 feet 3 inches (one meter) tall, slightly shorter than the famous 60,000-year-old Homo floresiensis fossil discovered in 2003 in Liang Bua Cave, about 50 miles away.

Similarities between the Mata Menge fossils and those of Homo erectus from Java suggest that Homo floresiensis descended from this larger body.

“This means that Homo floresiensis experienced a dramatic reduction in body size from the large Homo erectus, whose body size was similar to modern humans,” said Professor Yousuke Kaifu of the University of Tokyo, lead author of the study published in Nature Communications.

The findings support the theory of island dwarfism, where larger-bodied mammals such as elephants on Flores shrink in size over generations due to environmental pressures, including lack of food.

Researchers believe that this process led to the appearance of Homo floresiensis between one million and 700,000 years ago.

Homo floresiensis, which became extinct shortly after Homo sapiens arrived in the region, is thought to have been an isolated lineage of archaic hominins.

The timing of their disappearance suggests that the arrival of modern humans may have played a role in their extinction.

“I think our species is very likely to have been the culprit,” said Professor Adam Broom of Griffith University’s Australian Research Center for Human Evolution, co-author of the study.

“This isolated lineage of archaic hominids appears to have existed on Flores for an extremely long time and then disappeared shortly after Homo sapiens is known to have established a presence in the region.”

The Mata Menge fossils, including the newly identified humerus, provide critical evidence for understanding the evolutionary history of Homo floresiensis and the factors that led to their unique adaptations on Flores Island.