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:9/19/2014)... of fairness did not evolve for the sake of ... benefits of continued cooperation, so say Frans de Waal, ... article about inequity aversion (IA), which is defined as ... published in Science . , Their conclusion ... studies to address their hypothesis that it is the ...
(Date:9/19/2014)... a species which over thousands of years has adapted to ... substance that makes the cold dangerous for you. , This ... , and the cold provoking substance, called nonylphenol, comes from ... is suspected of being a endocrine disruptor, but when entering ... worm,s ability to protect the cells in its body from ...
(Date:9/19/2014)... , Sept. 19, 2014 Nxt-ID, Inc. (Nasdaq: ... company focused on the growing m-commerce market, updates the "Wocket in ... in the lightweight and light middleweight weight classes, Vinny Pazienza ... was announced that Game of Thrones actor Ciaran ... with Children star Katey Sagal have been cast ...
Breaking Biology News(10 mins):Evolution of responses to (un)fairness 2Evolution of responses to (un)fairness 3Environmental pollutants make worms susceptible to cold 2Environmental pollutants make worms susceptible to cold 3NXT-ID's Vinny Paz Celebrity Ad Wocket Update: Katey Sagal and Ciaran Hinds Attached to His Upcoming Movie 2NXT-ID's Vinny Paz Celebrity Ad Wocket Update: Katey Sagal and Ciaran Hinds Attached to His Upcoming Movie 3
... -- Rice University researchers today announced that the ... low-cost technology for removing arsenic from drinking water, ... "Mexico,s debating the adoption of more stringent ... drinking water, and officials in Guanajuato are looking ...
... computer scientists are one step closer to building ... time underwater environmental monitoring. At the IEEE Reconfigurable ... computer scientists from the Jacobs School of Engineering ... of using reconfigurable hardware rather than competing hardware ...
... Supply Chain Council (SCC) announced today ... Operations Management to offer a unique new program that ... and operations management professionals.SCC is the world,s leading authority ... the SCOR(R) standard while APICS is the leader in ...
Cached Biology News:First 'nanorust' field test slated in Mexico 2Toward cheap underwater sensor nets 2Toward cheap underwater sensor nets 3Supply Chain Council Partners With APICS The Association for Operations Management 2
(Date:9/19/2014)... -- An entire month is dedicated to one of the ... (CMT) – a debilitating neuromuscular disease affecting the arms, ... and foot and hand deformities. CMT affects 1 in ... a progressive disease, and over time patients lose the ... as leg braces, wheelchairs and scooters to get around. ...
(Date:9/19/2014)... Biotech companies make announcements illustrating ... systems and advanced Laboratory Instrumentation. Companies in focus today ... BDX ), Thermo Fisher Scientific Inc. (NYSE: ... RGDO ), Sangamo Biosciences Inc. (NASDAQ: SGMO ... BioSciences, Inc. (OTCQB: PBIO) ("PBI" or the "Company") today ...
(Date:9/19/2014)... 19, 2014  Nektar Therapeutics (NASDAQ: ... characterizing the analgesic profiles of a series of ... agonist molecules. The preclinical research candidates were created ... The analgesic properties of kappa receptor ... 1,2 Kappa opioid receptors are expressed in ...
(Date:9/19/2014)... 2014 Pfenex Inc. (NYSE MKT: PFNX), a ... and difficult to manufacture proteins including biosimilar therapeutics, today ... st Annual NewsMakers in the Biotech Industry conference ... Liang , chief executive officer of Pfenex, will provide ... strategy on Friday, September 26, 2014 at 10:00 a.m. ...
Breaking Biology Technology:September is Charcot-Marie-Tooth (CMT) Awareness Month - Scheduled events, activities and important partnerships announced throughout the month! 2Medical Instrumentation Automation Advances for Biological Sample Preparation - Company Expects Q4 Revenue Impact from Newest Instrument Systems 2Medical Instrumentation Automation Advances for Biological Sample Preparation - Company Expects Q4 Revenue Impact from Newest Instrument Systems 3Medical Instrumentation Automation Advances for Biological Sample Preparation - Company Expects Q4 Revenue Impact from Newest Instrument Systems 4Medical Instrumentation Automation Advances for Biological Sample Preparation - Company Expects Q4 Revenue Impact from Newest Instrument Systems 5Medical Instrumentation Automation Advances for Biological Sample Preparation - Company Expects Q4 Revenue Impact from Newest Instrument Systems 6Medical Instrumentation Automation Advances for Biological Sample Preparation - Company Expects Q4 Revenue Impact from Newest Instrument Systems 7Nektar Presents Positive Preclinical Data on Oral, Peripherally-Acting Kappa Agonist Molecules at 2014 American Academy of Pain Management Meeting 2Nektar Presents Positive Preclinical Data on Oral, Peripherally-Acting Kappa Agonist Molecules at 2014 American Academy of Pain Management Meeting 3Nektar Presents Positive Preclinical Data on Oral, Peripherally-Acting Kappa Agonist Molecules at 2014 American Academy of Pain Management Meeting 4Nektar Presents Positive Preclinical Data on Oral, Peripherally-Acting Kappa Agonist Molecules at 2014 American Academy of Pain Management Meeting 5Pfenex to Present at Upcoming Industry Conference on September 26 2
... is currently facing major government-mandated change as a ... act requires near real-time reporting and companies to ... it is not explicit as to the technology ... Sarbox does not mandate any technology; however, it ...
... Michigan has an ancient and proud history of interstate ... states). Sometimes, like this past New Years Day, the ... Michigan Wolverines and marijuana have in common? They both ... may be fomenting another interstate rivalry. This one is ...
... WAUKESHA, Wis. -RedPrairie announced Wednesday it will support ... integrated mix of supply chain execution solutions. ... to construct a customer distribution network next year ... s distribution and enterprise vision products. , ...
Cached Biology Technology:Technology Implications of Sarbanes-Oxley 2Technology Implications of Sarbanes-Oxley 3For Now, Michigan Can Celebrate $150 Million Entrepreneurial VC Fund 2For Now, Michigan Can Celebrate $150 Million Entrepreneurial VC Fund 3For Now, Michigan Can Celebrate $150 Million Entrepreneurial VC Fund 4
Porcine Pulmonary Artery Endothelial Cells (PPAEC) (>500,000 cells)...
... The Jouan MSC series of ... comfortable working conditions and certification to ... automatic regulation ensures that the cabinets ... working conditions. Natural lighting, low noise ...
... HM-4000 Multidizer is designed with a variety ... rotating - all in one unit. Shake, ... independently operating compartments allow for hybridization and ... motion , The upper chamber uses ...
... MSC series of Class II Biological ... and certification to the world's highest ... that the cabinets cannot be adjusted ... lighting, low noise and arm rest ...
Biology Products: