18 September 2025 The Future is the Product of the Past

Oldest known arrowheads uncovered in the Americas

Archaeologists from Oregon State University have discovered projectile points in Idaho that are thousands of years older than any that have previously been discovered in the Americas.

 This discovery has helped to fill in the history of how early humans made and used stone weapons.

At the Cooper’s Ferry site along the Salmon River in present-day Idaho, the researchers discovered 13 complete and numerous fragmentary projectile points. They are 3,000 years older than the Clovis fluted points found across North America and 2,300 years older than the points previously discovered at the same location.

The 13 full and fragmentary projectile points, razor-sharp and ranging from about half an inch to 2 inches long, are from roughly 15,700 years ago, according to carbon-14 dating.

The findings were published in the journal Science Advances.

Stone projectile points discovered buried inside and outside of pit features at the Cooper’s Ferry site, Area B. Photo: Loren Davis
Stone projectile points discovered buried inside and outside of pit features at the Cooper’s Ferry site, Area B. Photo: Loren Davis

“From a scientific point of view, these discoveries add very important details about what the archaeological record of the earliest peoples of the Americas looks like,” said Loren Davis, an anthropology professor at OSU and head of the group that found the points. “It’s one thing to say, ‘We think that people were here in the Americas 16,000 years ago;’ it’s another thing to measure it by finding well-made artifacts they left behind.”

The points are revelatory not just in their age, but in their similarity to projectile points found in Hokkaido, Japan, dating to 16,000-20,000 years ago. Their presence in Idaho adds more detail to the hypothesis that there are early genetic and cultural connections between the ice age peoples of Northeast Asia and North America.

Davis said: “The earliest peoples of North America possessed cultural knowledge that they used to survive and thrive over time. Some of this knowledge can be seen in the way people made stone tools, such as the projectile points found at the Cooper’s Ferry site.”

Excavator at work recording artifacts excavated from a pit feature at the Cooper’s Ferry site.. Photo: Loren Davis
Excavator at work recording artifacts excavated from a pit feature at the Cooper’s Ferry site.. Photo: Loren Davis

“By comparing these points with other sites of the same age and older, we can infer the spatial extents of social networks where this technological knowledge was shared between peoples,” added Davis.

These slender projectile points are characterized by two distinct ends, one sharpened and one stemmed, as well as a symmetrical beveled shape if looked at head-on. They were likely attached to darts, rather than arrows or spears, and despite the small size, they were deadly weapons, Davis said.

“There’s an assumption that early projectile points had to be big to kill large game; however, smaller projectile points mounted on darts will penetrate deeply and cause tremendous internal damage,” he said. “You can hunt any animal we know about with weapons like these.”

These discoveries add to the emerging picture of early human life in the Pacific Northwest, Davis said. “Finding a site where people made pits and stored complete and broken projectile points nearly 16,000 years ago gives us valuable details about the lives of our region’s earliest inhabitants.”

The Salmon River site where the points were found is on traditional Nez Perce land, known to the tribe as the ancient village of Nipéhe. The land is currently held in public ownership by the federal Bureau of Land Management.

The recently discovered pits are a part of the larger Cooper’s Ferry record, which also includes a fire pit that dates back 14,200 years and a food-processing area with the remains of an extinct horse, both of which were previously reported by Davis and colleagues. In total, they found and mapped more than 65,000 items, recording their locations to the millimeter for precise documentation.

Oregon State University

https://www.science.org/doi/10.1126/sciadv.ade1248

Related Articles

Ancient Greek Marble Workshop Unearthed on Paros Island

20 May 2025

20 May 2025

The world of ancient Greek art continues to amaze modern scholars, with recent excavations on Paros Island unveiling a long-lost...

Archaeologists Find the Missing Link of the Alphabet

15 April 2021

15 April 2021

Researchers believe that Tel Lachish pottery is the oldest of its kind found in the region, and could explain how...

From Bronze Age to Buddhism: Xinjiang’s Archaeological Journey Through Time and Recent Discoveries

4 March 2025

4 March 2025

Recent archaeological investigations in the Xinjiang Uygur Autonomous Region have significantly enhanced our understanding of the area’s historical context and...

Restoration of the Duomo of Florence has revealed original polychrome paint

1 December 2022

1 December 2022

During the restoration of the Porta dei Cornacchini and the marble cladding of the northern side of Florence’s Duomo, extensive...

A rare statue of K’awiil, Mayan god of Lighting have uncovered in Mexico

1 May 2023

1 May 2023

In southeastern Mexico, archaeologists uncovered a rare sculpture of a powerful Mayan god near the path of a large-scale rail...

Gravitational Wave Researchers Shed New Light on the Mystery of the 2,000-Year-Old Computer Antikythera Mechanism

28 June 2024

28 June 2024

Astronomers from the University of Glasgow who specialize in studying tiny ripples in space-time have shed new light on the...

Jordan’s mysterious ancient wall “Khatt Shebib”

22 October 2022

22 October 2022

The accomplishments of ancient civilizations are typically woefully underappreciated because we stereotype them as primitives who only wore loincloths, and...

Roman Bath Complex Found under Spain’s Caños de Meca beach

22 May 2021

22 May 2021

A well-preserved ancient Roman bath complex emerged from the sand of a beach in the Andalusian region of southwestern Spain....

Ancient DNA Reveals Surprising Maternal Lineages at Neolithic Çatalhöyük

28 June 2025

28 June 2025

New research, utilizing ancient DNA analysis, is challenging long-held assumptions about kinship and societal structures in one of the world’s...

The newly discovered fossils are 200,000 years old in Denisova Cave

29 November 2021

29 November 2021

Scientists have discovered the earliest remains of a human lineage known as the Denisovans. Researchers have identified stone artifacts connected...

Rare Roman Cavalry Swords Lead to Major Archaeological Discovery of Iron Age to Roman Settlement in Gloucestershire

4 July 2025

4 July 2025

A remarkable archaeological excavation in Gloucestershire has unveiled a vast settlement site dating back over 2,000 years, bridging the Iron...

Monumental Roman complex discovered in France

19 March 2023

19 March 2023

In the city of Reims in northeastern France, archaeologists have discovered an ancient Roman-era monumental complex dating from the 2nd...

The ‘extraordinary’ Roman mosaic depicting scenes from Homer’s Iliad unearthed in a Rutland farmer’s field is the first of its kind in England

25 November 2021

25 November 2021

The 1,500-year-old mosaic discovered by a farmer was considered Britain’s “most exciting” Roman find. The artwork was discovered on private...

The largest marine turtle fossil of its kind ever discovered in Europe unearthed in Spain

21 November 2022

21 November 2022

In northern Spain, scientists discovered the remains of a new species of enormous marine turtle. The prehistoric creature is the...

An Etruscan Home Discovered in Corsica “First-Of-Its-Kind Find for the Island”

11 July 2024

11 July 2024

Archaeologists have discovered the first Etruscan domestic structure, dating to the 6th to 4th centuries BC, off the east coast...