Navigation Links
No nuts for 'Nutcracker Man'
Date:5/3/2011

SALT LAKE CITY, May 2, 2011 - For decades, a 2.3 million- to 1.2 million-year-old human relative named Paranthropus boisei has been nicknamed Nutcracker Man because of his big, flat molar teeth and thick, powerful jaw. But a definitive new University of Utah study shows that Nutcracker Man didn't eat nuts, but instead chewed grasses and possibly sedges - a discovery that upsets conventional wisdom about early humanity's diet.

"It most likely was eating grass, and most definitely was not cracking nuts," says geochemist Thure Cerling, lead author of the study published in the May 2 online edition of the journal Proceedings of the National Academy of Sciences.

Study co-author Kevin Uno, a University of Utah Ph.D. student in geology, adds: "This study provides evidence that Paranthropus boisei was not cracking nuts, but was instead eating mainly tropical grasses or sedges. It was not competing for food with most other primates, who ate fruits, leaves and nuts; but with grazers zebras' ancestors, suids [ancestors of pigs and warthogs] and hippos."

Cerling and colleagues determined the extinct, upright-walking Paranthropus boisei's diet by analyzing carbon isotope ratios in the tooth enamel of 24 teeth from 22 individuals who lived between 1.4 million and 1.9 million years ago and were closely related to and once thought part of the genus of human ancestors named Australopithecus. Both extinct Paranthropus and the human genus Homo arose from Australopithecus.

University of Utah researchers Cerling and Uno conducted the study with three scientists from the National Museums of Kenya anthropologist Emma Mbua and paleontologists Francis Kirera and Fredrick Manthi and with Frederick Grine of Stony Brook University, anthropologist Matt Sponheimer of the University of Colorado at Boulder and famed anthropologist Meave Leakey, who is affiliated with the National Museums, Stony Brook and the Turkana Basin In
'/>"/>

Contact: Lee Siegel
leesiegel@ucomm.utah.edu
801-581-8993
University of Utah
Source:Eurekalert  

Page: 1 2 3 4 5

Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
No nuts for 'Nutcracker Man'
(Date:1/22/2015)... NEW YORK and POINT ROBERTS, Washington ... global news source covering leading sectors including technology and tech ... Personal Privacy marketplace featuring master pickpocket and security consultant ... wallet is stolen and talks about the Wocket™ biometric smart ...
(Date:1/22/2015)... N.C. , Jan. 22, 2015 Infinisource has launched ... of the G2 model. The G2 sets a higher standard ... iSolved human capital management solution. With plug-and-play installation, touch screen ... time clock provides a robust time collection solution for the ...
(Date:12/19/2014)... 18, 2014 Research and Markets ( http://www.researchandmarkets.com/research/8kmfcn/iphone_5s ... 5S Fingerprint Sensor - Apple/AuthenTec TMDR92 & Sapphire - ... http://photos.prnewswire.com/prnh/20130307/600769 Following the ... fingerprint reading feature with the iPhone 5S. It is ...
Breaking Biology News(10 mins):Apollo Robbins Talks about the Illusion of Personal Safety and How Easily Your Wallet is Stolen; If a Wocket Wallet is Stolen the Thief Can't do Anything With it! 2Apollo Robbins Talks about the Illusion of Personal Safety and How Easily Your Wallet is Stolen; If a Wocket Wallet is Stolen the Thief Can't do Anything With it! 3Infinisource's NXG series sets new time clock standard 2iPhone 5S Fingerprint Sensor - Apple/AuthenTec TMDR92 & Sapphire - Technology Report 2
... their existence without thousands of proteins performing myriad vital ... the study of protein structure and function can lead ... disorders. For example, the discovery of insulin’s role in ... treatment based on insulin injections. Yet, despite enormous research ...
... a paper that will be published online in advance of ... and colleagues (The Salk Institute and HHMI) demonstrate that ... as in animals. , "These findings will influence our thinking ... to understand why cells use them as signaling compartments," noted ...
... Center researchers helps explain how “memory” T cells protect ... today in Proceedings of the National Academy of Science ... organs where immune cells reside and proliferate, but also ... spread of an invading virus occurs. , After becoming ...
Cached Biology News:Weizmann Institute scientists develop a general 'control switch' for protein activity 2Weizmann Institute scientists develop a general 'control switch' for protein activity 3How 'memory' T cells curb the spread of viruses throughout the body 2
(Date:1/22/2015)... Switzerland (PRWEB) January 22, 2015 Selexis ... characterized mammalian Research Cell Banks (RCBs) used for drug ... Research Cell Banks will include Next-Generation Sequencing ... genetic architecture de-risks biologic manufacturing by ensuring the integrity ...
(Date:1/22/2015)... Nueva Jersey , 22 de enero de 2015 ... Research abre hoy su llamada a nominaciones para 2015. ... científica ha hecho, o tiene el potencial para hacer, ... Las nominaciones se aceptarán hasta el 15 de marzo ...
(Date:1/22/2015)... 2015  Varian Medical Systems (NYSE: VAR ), world ... its commitment to sustainability with inclusion on a prestigious list ... ranked healthcare equipment company among the Corporate Knights Global 100 ... Forum at Davos, Switzerland . ...
(Date:1/22/2015)...  Derma Sciences, Inc. (Nasdaq: DSCI ), ... care, announces that AMNIOEXCEL® and AMNIOMATRIX®, amniotic allografts ... the Premier, Inc. Regenerative Skin Grafting contract portfolio. ... and AMNIOMATRIX® product lines, which continue to be ...
Breaking Biology Technology:Selexis Generated Research Cell Banks Now Fully Sequenced Using Next-Generation Sequencing 2El Dr. Paul Janssen Award for Biomedical Research emite su llamada a los nominados para 2015 2El Dr. Paul Janssen Award for Biomedical Research emite su llamada a los nominados para 2015 3El Dr. Paul Janssen Award for Biomedical Research emite su llamada a los nominados para 2015 4Varian Honored Among World's 100 Most Sustainable Corporations 2Derma Sciences Expands Access of its AMNIOTIC TISSUE Product Line with New Premier, Inc. Agreement 2Derma Sciences Expands Access of its AMNIOTIC TISSUE Product Line with New Premier, Inc. Agreement 3Derma Sciences Expands Access of its AMNIOTIC TISSUE Product Line with New Premier, Inc. Agreement 4Derma Sciences Expands Access of its AMNIOTIC TISSUE Product Line with New Premier, Inc. Agreement 5
... time again for the half-year roundup of stock market results for ... the results from the first quarter, it was pretty dismal for ... Nasdaq National Market down 8 percent , Nasdaq Biotech down 16% ... great trend. As you can see below, the results for the ...
... profound impact on farming much the same as people would ... dot-com businesses, though many might not realize it. , , ... family farm in Loyal, WI, will showcase the latest technology ... on Tuesday, July 12, and runs thru Thursday, July 14. ...
... Crosse, Wis. - Merkle Inc. , has ... a data quality software solution, to modify their data ... customers the ability to customize and aggregate information, cleanse ... and provide association and householding capabilities. Users also have ...
Cached Biology Technology:Midwest large cap life sciences mostly outperform market 2Midwest large cap life sciences mostly outperform market 3Farmers explore technology at Wisconsin event 2
In Western blotting antibodies recognize 94 K protein band, which corresponds to S-layer protein...
High affinity antibodies recognizes HSP70 protein from human cardiac tissue. Could be used for Westerb blotting application, ELISA....
The VersArray hybridization chamber is used for manual (coverslip) hybridization of microarrays. The chamber accommodates 2 slides and is watertight to allow incubation of slides in a water bath. Dim...
... PROTECT FROM LIGHT. Useful in cell activation experiments when ... by TLC. Soluble in DMSO or EtOH. ... mM stock in DMSO is recommended. Microliter amounts of ... with rapid mixing (e.g. 10 μl into 5 ml ...
Biology Products: