Navigation Links
Ancient 'Nutcracker Man' challenges ideas on evolution of human diet
Date:4/30/2008

Tiny marks on the teeth of an ancient human ancestor known as the "Nutcracker Man" may upset current evolutionary understanding of early hominid diet.

Using high-powered microscopes, researchers looked at rough geometric shapes on the teeth of several Nutcracker Man specimens and determined that their structure alone was not enough to predict diet.

Peter Ungar, professor of anthropology at the University of Arkansas in Fayetteville, contends the finding shows evolutionary adaptation for eating may have been based on scarcity rather than on an animal's regular diet.

"These findings totally run counter to what people have been saying for the last half a century," says Ungar. "We have to sit back and re-evaluate what we once thought."

Ungar and his colleagues, Frederick E. Grine of State University of New York at Stony Brook and Mark F. Teaford of Johns Hopkins University, Baltimore, Md., reported their findings last week in the Public Library of Science One, a peer-reviewed, international, online journal. The research was funded in part by the National Science Foundation.

The researchers examined the teeth of Paranthropus boisei, an ancient hominin that lived between 2.3 and 1.2 million years ago and is known popularly as the "Nutcracker Man" because it has the biggest, flattest cheek teeth and the thickest enamel of any known human ancestor.

"Ungar and colleagues' work on Paranthropus boisei diet is extremely important," says Joanna Lambert, physical anthropology program director at NSF. "Understanding what and how early hominins ate sheds light not only onto the feeding biology of our fossil ancestors, but also onto the very evolution of our own species."

Scientists long have believed that P. boisei fed on nuts and seeds or roots and tubers found in the savannas throughout eastern Africa because the teeth, cranium and mandible appear to be built for chewing and crunching hard objects.

But
'/>"/>

Contact: Bobbie Mixon
bmixon@nsf.gov
703-292-8485
National Science Foundation
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Ancient sunflower fuels debate about agriculture in the Americas
2. Ancient ecosystems organized much like our own
3. Synchrotron light unveils oil in ancient Buddhist paintings from Bamiyan
4. Ancient DNA: reconstruction of the biological history of Aldaieta necropolis
5. Ancient reptile rises from Alberta oil sands
6. Ancient lemurs little finger poses mystery
7. Floating a big idea: MIT demos ancient use of rafts to transport goods
8. Ancient mystery solved
9. New dinosaur from Mexico offers insights into ancient life on West America
10. Scientists rebuild ancient proteins to reveal primordial Earths temperature
11. Avian origins: new analysis confirms ancient beginnings
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Ancient 'Nutcracker Man' challenges ideas on evolution of human diet
(Date:7/22/2014)... feature natural habitats and trees and not just asphalt ... to a University of Colorado Boulder study. , Working ... provide stress-reducing benefits for youth, according to a paper ... The study is one of the first of its ... to green settings and stress. , "Many schools already ...
(Date:7/22/2014)... Conn. , July 22, 2014 ... the growing m-commerce market, announces its next generation smart ... 30-minute consumer oriented television show that airs on ... NewsWatch regularly features top technology ... July 31st on the History Channel (6:00-6:30am ET/PT) ...
(Date:7/21/2014)... researchers have detected genetic fragments of Middle East Respiratory ... holding a camel infected with the virus. The work, ... open-access journal of the American Society for Microbiology, indicates ... disease can be transmitted through the air. , MERS, ... has been identified in 699 people as of June ...
Breaking Biology News(10 mins):Natural-terrain schoolyards reduce children's stress, says Colorado University-Boulder study 2Natural-terrain schoolyards reduce children's stress, says Colorado University-Boulder study 3NXT-ID's Next Generation Wocket Smart Wallet to be Featured on NewsWatch, Airing on History Channel, FYI Network and ION Network 2NXT-ID's Next Generation Wocket Smart Wallet to be Featured on NewsWatch, Airing on History Channel, FYI Network and ION Network 3Middle East Respiratory Syndrome coronavirus detected in the air of a Saudi Arabian camel barn 2
... between tiny single-celled algae and highly specialized bacteria. Their ... the oceans by taking nitrogen from the atmosphere and ... use. Details of the symbiosis, published in ... from the investigation of a mysterious nitrogen-fixing microbe with ...
... Just as women are advised to get plenty of folic ... new research suggests another very similar nutrient may one day ... Consuming greater amounts of choline ... may lower an infant,s vulnerability to stress-related illnesses, such as ...
... Bethesda, MD FASEB MARC (Minority Access to Research ... the 2012 Biomedical Engineering Society (BMES) Annual Meeting in ... meant to promote the entry of underrepresented minority students, ... science community and to encourage the participation of young ...
Cached Biology News:Unusual symbiosis discovered in marine microorganisms 2Unusual symbiosis discovered in marine microorganisms 3Unusual symbiosis discovered in marine microorganisms 4Nutrient in eggs and meat may influence gene expression from infancy to adulthood 2Nutrient in eggs and meat may influence gene expression from infancy to adulthood 3
(Date:7/22/2014)... SHENZHEN, China , July 22, 2014 ... Tech), a subsidiary of BGI, the world,s largest ... a new human whole exome sequencing service based ... service includes in-depth bioinformatics analysis and SNP validation, ... 31, 2014. Complete Genomics, highly ...
(Date:7/22/2014)... July 22, 2014 In chemical ... an increasingly common sight. The rapid rise of ... now well- established as a core gas measurement ... has made them the gas analyzer technology of ... conditions encountered in some processes have limited their ...
(Date:7/22/2014)... , July 22, 2014  The Broad ... million from philanthropist Ted Stanley aimed ... bringing new treatments based on molecular understanding to ... The Stanley commitment – the ... largest for scientific research in general – will ...
(Date:7/22/2014)... Md. , July 22, 2014  United ... today that it will release its second quarter ... July 29, 2014. United Therapeutics will ... 2014, at 9:00 a.m. Eastern Time.  The teleconference ... dialing 1-970-315-0533.  A rebroadcast of the teleconference will ...
Breaking Biology Technology:BGI Tech Launches Human Whole Exome Sequencing Service on Complete Genomics' Advanced Platform 2BGI Tech Launches Human Whole Exome Sequencing Service on Complete Genomics' Advanced Platform 3METTLER TOLEDO Shows How Tunable Diode Lasers (TDLs) Can Be Installed Where No TDLs Have Gone Before 2$650 million commitment to Stanley Center at Broad Institute aims to galvanize mental illness research 2$650 million commitment to Stanley Center at Broad Institute aims to galvanize mental illness research 3$650 million commitment to Stanley Center at Broad Institute aims to galvanize mental illness research 4$650 million commitment to Stanley Center at Broad Institute aims to galvanize mental illness research 5$650 million commitment to Stanley Center at Broad Institute aims to galvanize mental illness research 6$650 million commitment to Stanley Center at Broad Institute aims to galvanize mental illness research 7$650 million commitment to Stanley Center at Broad Institute aims to galvanize mental illness research 8$650 million commitment to Stanley Center at Broad Institute aims to galvanize mental illness research 9$650 million commitment to Stanley Center at Broad Institute aims to galvanize mental illness research 10
... (NYSE: DGX ), the leading provider of diagnostic ... shareholders,on Friday, May 16th at 10:30 am ET., ... Relations,section of the company Web site at http://www.questdiagnostics.com/investor ... broadcast, a replay will be available on,the Web site ...
... study supports the potential for QLT,s drug elution technology ... reduce and ... QLT Inc. (NASDAQ: QLTI; TSX:,QLT) announced today results from ... QLT Plug Delivery, Inc., of its punctal plug,drug delivery ...
... 12 Amylin Pharmaceuticals,Inc. (Nasdaq: AMLN ) will ... May 14, 2008 at 3:05 p.m. CT / 1:05 ... Finance and Chief Financial Officer of,Amylin Pharmaceuticals, will be ... breakout session will be webcast, and a,recording will be ...
Cached Biology Technology:QLT reports initial proof of concept data for punctal plug delivery technology 2QLT reports initial proof of concept data for punctal plug delivery technology 3QLT reports initial proof of concept data for punctal plug delivery technology 4
... Many differences exist between the various commercial ... glass slide used, the length and GC ... and the manufacturing protocol employed all influence ... analysis. With all the different variables ...
... The ICS-1500 system provides excellent ... dual-piston pumping, electrolytic suppression, and column ... instrument offers outstanding sensitivity and stability. ... quieter baselines for trace-level work. Operate ...
... Automatic grid, subgrid and spot finding overcome tedious ... template assignment , ... Extensive background and signal options to optimize, ... results , Characterize more precisely through ...
... UNIchip AV-400 contains 400 unique ... nitrocellulose-coated glass slide. The proteins, a ... are arrayed in quadruplicate for high-quality ... specific chip layout guarantee high validity ...
Biology Products: