Archaeologists have uncovered intriguing similarities between the behavior of Homo sapiens and Neanderthals, one of our closest extinct relatives.

In a study published in the Journal of Archaeological Method and Theory, a team of researchers led by Amélie Vallerand of the University of Montreal's Department of Anthropology, found striking parallels between how Neanderthals and modern humans made use of space in their dwellings.

Neanderthals (Homo neanderthalensis) were a human species that lived in Eurasia until their disappearance around 40,000 years ago. In certain regions and periods, they coexisted with anatomically modern humans—and even interbred with us.

Traditionally, experts considered Neanderthal behavior to be less complex than that of our own species. But over the past decades, a growing body of evidence has challenged this view, with research indicating that aspects of Neanderthal behavior were comparable in complexity and diversity to prehistoric Homo sapiens.

A reconstruction shows a female Neanderthal. Archaeologists have identified similarities between the behavior of modern humans and Neanderthals. A reconstruction shows a female Neanderthal. Archaeologists have identified similarities between the behavior of modern humans and Neanderthals. Joe McNally/Getty Images

The latest study lends further support to this view, detailing evidence of similarities in how modern humans and Neanderthals used space.

The study's authors write: "Because it is often assumed that fundamental behavioral differences distinguish Neanderthals and Homo sapiens, the ability to structure space within the sites they occupied into distinct activity areas is often invoked as a key distinctive trait of our species.

"However, this behavior has never been assessed for both groups at a single site, hindering direct comparisons to date," the authors said.

To help resolve this issue, the team analyzed artifacts and features from the Riparo Bombrini site in northwestern Italy—a collapsed rock shelter that preserves evidence of settlement by Neanderthals and, susbequently, Homo sapiens. This analysis revealed common patterns of settlement between the two populations.

The researchers mapped the distribution of stone tools, animal bones, ocher and marine shells across the surface of the site. This enabled them to identify distinct clusters of artifacts and materials, which helped to shed light on the behaviors of the different groups that lived at the site.

Among the findings, the researchers determined that both Neanderthals and Homo sapiens exhibited a structured use of the space, organizing their living areas into distinct high- and low-intensity zones of activity. These distinct zones were used for different activities.

This suggests Neanderthals and modern humans shared comparable cognitive capacities for spatial organization, according to the study's authors.

"Like Homo sapiens, Neanderthals organized their living space in a structured way, according to the different tasks that took place there and to their needs," Vallerand said in a press release. "So this is yet another study indicating that Neanderthals were more 'human' than is generally assumed."

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