Subscribe to our free daily newsletters
. Earth Science News .




Subscribe to our free daily newsletters



ABOUT US
Early evidence of Middle Stone Age projectiles found in South Africa's Sibudu Cave
by Staff Writers
Washington DC (SPX) May 03, 2017


Analyzed serrated pieces. Image courtesy Rots et al (2017).

Innovations in stone knapping technology during the South African Middle Stone Age enabled the creation of early projectile weapons, according to a study published April 26, 2017 in the open-access journal PLOS ONE by Veerle Rots from University of Liege, Belgium, and colleagues.

The South African Middle Stone Age (MSA) is considered a period of major technological advancement, with hunter-gatherers introducing new manipulative techniques using heat and pressure to create stone projectile weapons. However, the timing and location of these developments is a topic of much debate.

The authors of the present study examined 25 weapon point fragments excavated from the Sibudu Cave site, analyzing their technological and functional differences and comparing them with reference samples produced for the purpose by an experienced knapper.

Some of the points had two faces, a likely result of applying pressure to both sides. Some had serrations, or jagged edges, that were likely produced by a technique known as pressure flaking.

The researchers found that 14 of the 25 point fragments bore evidence of impact-related damage, animal residues, and wear features that strongly indicated that these points may have been were used for hunting.

Examination of the impact-related fractures and the distribution of the points indicated that these points may have been attached to handles to form projectile weapons and that these weapons were projected from a distance, most likely with a flexible spear-thrower or a bow.

While further research would help to confirm the timeline and development of stone knapping techniques, the new Sibudu Cave site data may push back the evidence for the use of pressure flaking during the MSA to 77,000 years ago. The authors note that these findings highlight the diversity of technical innovations adopted by southern African MSA humans.

Rots V, Lentfer C, Schmid VC, Porraz G, Conard NJ (2017) Pressure flaking to serrate bifacial points for the hunt during the MIS5 at Sibudu Cave (South Africa). PLoS ONE 12(4): e0175151. doi:10.1371/journal.pone.0175151

ABOUT US
What comes next - how the brain predicts speech
Washington DC (SPX) May 03, 2017
An international collaboration of neuroscientists has shed light on how the brain helps us to predict what is coming next in speech. In the study, publishing in the open access journal PLOS Biology scientists from Newcastle University, UK, and a neurosurgery group at the University of Iowa, USA, report that they have discovered mechanisms in the brain's auditory cortex involved in processing spe ... read more

Related Links
PLOS
All About Human Beings and How We Got To Be Here


Thanks for being here;
We need your help. The SpaceDaily news network continues to grow but revenues have never been harder to maintain.

With the rise of Ad Blockers, and Facebook - our traditional revenue sources via quality network advertising continues to decline. And unlike so many other news sites, we don't have a paywall - with those annoying usernames and passwords.

Our news coverage takes time and effort to publish 365 days a year.

If you find our news sites informative and useful then please consider becoming a regular supporter or for now make a one off contribution.

SpaceDaily Contributor
$5 Billed Once


credit card or paypal
SpaceDaily Monthly Supporter
$5 Billed Monthly


paypal only

Comment using your Disqus, Facebook, Google or Twitter login.

Share this article via these popular social media networks
del.icio.usdel.icio.us DiggDigg RedditReddit GoogleGoogle

ABOUT US
US opioid crisis at epidemic proportions

Bullying is on the decline in most schools, new research shows

When bridges collapse; Are we underestimating the risks

Cities provide paths from poverty to sustainability

ABOUT US
Penn researchers quantify the changes that lightning inspires in rock

Russian scientists create new system of concrete building structures

New organic lasers one step closer to reality

First luminescent molecular system with a lower critical solution temperature

ABOUT US
Norway billionaire reveals plan to give away his fortune

Some corals adapting to warming climate

New coral bleaching database to help predict fate of global reefs

Rising carbon dioxide levels, ocean acidity may change crucial marine process

ABOUT US
Canada: walrus, caribou face extinction risk in Arctic

Antarctic Peninsula ice more stable than thought

Warm winds: New insight into what weakens Antarctic ice shelves

New atlas provides highest-resolution imagery of the Polar Regions seafloor

ABOUT US
Researchers track impact of Brazil's 'Soy Moratorium'

Scientists say agriculture is good for honey bees

Common pesticide damages honey bee's ability to fly

Urban farming flourishes in New York

ABOUT US
Earthquakes can make thrust faults open violently and snap shut

6.8-magnitude quake strikes the Philippines: USGS

New model could help predict major earthquakes

Hard rocks from Himalaya raise flood risk for millions

ABOUT US
Rocket attack on UN camp in Mali kills one, wounds 9

Congolese plantation sprouts art centre to help the poor

US Defense Secretary Mattis visits strategic Djibouti

Top conservationist wounded in Kenya gun attack

ABOUT US
Brazil's indigenous leader Raoni: youths losing their culture

Population growth, spread responsible for human advancement

Early evidence of Middle Stone Age projectiles found in South Africa's Sibudu Cave

Bonobos may be better representation of last common ancestor with humans




Memory Foam Mattress Review
Newsletters :: SpaceDaily :: SpaceWar :: TerraDaily :: Energy Daily
XML Feeds :: Space News :: Earth News :: War News :: Solar Energy News






The content herein, unless otherwise known to be public domain, are Copyright 1995-2017 - Space Media Network. All websites are published in Australia and are solely subject to Australian law and governed by Fair Use principals for news reporting and research purposes. AFP, UPI and IANS news wire stories are copyright Agence France-Presse, United Press International and Indo-Asia News Service. ESA news reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. All articles labeled "by Staff Writers" include reports supplied to Space Media Network by industry news wires, PR agencies, corporate press officers and the like. Such articles are individually curated and edited by Space Media Network staff on the basis of the report's information value to our industry and professional readership. Advertising does not imply endorsement, agreement or approval of any opinions, statements or information provided by Space Media Network on any Web page published or hosted by Space Media Network. Privacy Statement