Navigation Links
A chip off the early hominin tooth
Date:9/16/2010

Were our early mammalian ancestors vegetarians, vegans or omnivores? It's difficult for anthropologists to determine the diet of early mammalians because current fossil analysis provides too little information. But a new method that measures the size of chips in tooth fossils can help determine the kinds of foods these early humans consumed.

Prof. Herzl Chai of Tel Aviv University's School of Mechanical Engineering, in collaboration with scientists from George Washington University and the U.S. National Institute of Standards and Technology (NIST), has developed an equation for determining how the size of a chip found in the enamel of a tooth relates to the bite force needed to produce the chip. With the aid of this information, researchers can better determine the type of food that animals, and early humans, could have consumed during their lifetimes.

Teeth are the only relevant fossils with staying power, Prof. Chai explains. Made of hard, mineralized material, teeth from animals that are thousands of years old remain relatively intact. Teeth that display a greater number of large chips indicate that animals like our early ancestors were consuming harder foods such as nuts, seeds or items with bones. A lesser amount of small chips demonstrates that the animal's diet more likely consisted of softer foods, such as vegetation. Dr. Chai's findings were recently reported in the journal Biology Letters.

Joining anthropology and mechanical engineering

In the recent study, Prof. Chai combined his mechanical engineering background with the expertise of anthropologists at George Washington University and material scientists at NIST to develop a simple equation to predict the maximum bite force used to create a tooth chip. The equation correlates well with a commonly-used equation from jaw mechanics ― a more complex approach for determining the maximum bite force an animal can deliver.

Drawn from "fra
'/>"/>

Contact: George Hunka
ghunka@aftau.org
212-742-9070
American Friends of Tel Aviv University
Source:Eurekalert  

Page: 1 2

Related biology news :

1. Stevens strengthens Dominican Republics Early Warning System for Inundations
2. Reproducing early and often is the key to rapid evolution in plants
3. Early-stage gene transcription creates access to DNA
4. Global Viral Forecasting Initiative receives $11M to implement pandemic early warning system
5. Baby talk: The roots of the early vocabulary in infants learning from speech
6. Gaining too much weight during pregnancy nearly doubles risk of having a heavy baby
7. Hypertension develops early, silently, in African-American men
8. Joslin research finds nearly three-quarters of youths with diabetes insufficient in vitamin D
9. Study: Did early climate impact divert a new glacial age?
10. Water in the early universe
11. Haag honored with Presidential Early Career Scientists Award
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
A chip off the early hominin tooth
(Date:10/15/2014)... , Oct. 15, 2014 Sandata ... for home and community-based care, today announced it ... implementing Sandata,s Santrax® Electronic Visit Verification™ Solution (EVV™) ... is a home health company founded in 1996 ... . The study details ...
(Date:10/15/2014)... rapidly and to an unexpected extent. The outbreak does ... the virus shows a new disease dynamic in regions, ... reason, the German National Academy of Sciences Leopoldina, acatech ... the Union of the German Academies of Sciences and ... today. , In the statement the academies call for ...
(Date:10/15/2014)... 2014   Neurotechnology , a provider of ... of the VeriLook Surveillance 3.0 software development ... biometric face identification using live video streams from ... new version not only identifies faces in a ... while they are moving through the video frame. ...
Breaking Biology News(10 mins):Sandata Announces Case Study with Quality Care Services, Inc. 2Academies call for consequences from the Ebola virus epidemic 2Academies call for consequences from the Ebola virus epidemic 3Academies call for consequences from the Ebola virus epidemic 4Academies call for consequences from the Ebola virus epidemic 5VeriLook Surveillance 3.0 SDK Identifies Faces and Moving Objects, Differentiates Pedestrians from Other Moving Objects in Video Surveillance Systems 2VeriLook Surveillance 3.0 SDK Identifies Faces and Moving Objects, Differentiates Pedestrians from Other Moving Objects in Video Surveillance Systems 3
... , AMIA, the association for professionals in biomedical and ... the National Coordinator on Health Information Technology (DHHS/ ONCHIT), ... meaningful use of electronic health records (EHRs) over the ... Policy Committee (HITPC), on the continuation of support for ...
... When patients receive a bone marrow transplant, they are getting ... are needed when a patient is low on red blood ... be caused by cancer or even cancer treatments such as ... transplant might not succeed because the transplanted stem cells don,t ...
... Spanish . Fernando Rendo, biologist at the ... with the intention of completing the genealogical tree ... Country Autonomous Community (CAPVEAE) and Navarre. Concretely, he opted for ... (a kind of variation in the DNA sequence) that can ...
Cached Biology News:AMIA on meaningful use: Invest in people and technology 2How long do stem cells live? 2Basque thesis investigates wide diversity within certain ovine, bovine and equine breeds 2Basque thesis investigates wide diversity within certain ovine, bovine and equine breeds 3
(Date:10/22/2014)... 2014 WriteResult, LLC – a ... been working with a team of researchers from Yale ... Community Farming Collaborative to provide electronic questionnaire data collection ... study, which started in May, aims to evaluate the ... weekly exposure to and participation in urban agriculture to ...
(Date:10/22/2014)... SC (PRWEB) October 22, 2014 ... of its cardiovascular pharmacogenetics menu, which enables healthcare ... outcomes. With PCLS’s evidence-based results, healthcare providers ... and optimize their therapy, while minimizing risks for ... the U.S., according to the FDA [1] more ...
(Date:10/22/2014)... , Oct. 22, 2014 /PRNewswire/ - iCo Therapeutics ... today announced next steps for its Oral Amphotericin ... from its in vitro work involving ... iCo now plans to complete pre clinical studies ... initial Phase 1A clinical trial, utilizing approximately $700,000 ...
(Date:10/22/2014)... HONG KONG , Oct. 22, 2014 /PRNewswire/ ... announced today that rare disease expert John C. ... research. Dr. McKew brings more than two decades of ... the National Institutes of Health, Wyeth Research and Genetics ... will lead aTyr,s efforts to expand and translate its ...
Breaking Biology Technology:myPROpad™ Topic of Panel Discussion at the Yale Food Systems Symposium 2myPROpad™ Topic of Panel Discussion at the Yale Food Systems Symposium 3PCLS Announces Expansion of Cardiovascular Pharmacogenetic Testing Menu 2PCLS Announces Expansion of Cardiovascular Pharmacogenetic Testing Menu 3iCo Therapeutics Announces Advancement of Oral Amphotericin B Program 2iCo Therapeutics Announces Advancement of Oral Amphotericin B Program 3aTyr Pharma Appoints John C. McKew, Ph.D., as Vice President, Research 2aTyr Pharma Appoints John C. McKew, Ph.D., as Vice President, Research 3
... GeneMorph PCR mutagenesis kit produces a unique , mutational spectrum , ... , , ... Stratagene , , , ... The , GeneMorph PCR , mutagenesis kit ...
... cDNA gene clusters are novel and more ,than 50% ... Goncalves Jean-Michel Lelias Joe Sorge ,Stratagene , ... ,goes beyond normal cDNA collections. Stratagene has searched ... of cDNAs that are not found ,in the UniGene ...
... need to manually pour gels, saving up,to 4 hours ... to bubbles or leaking.All CastAway gels are guaranteed to ... date of manufacture, with no,detectable deterioration in band resolution. ... Stratagene adds a new 6% gel to the growing ...
Cached Biology Technology:Randomize Gene Sequences with New PCR Mutagenesis Kit 2Randomize Gene Sequences with New PCR Mutagenesis Kit 3Randomize Gene Sequences with New PCR Mutagenesis Kit 4Randomize Gene Sequences with New PCR Mutagenesis Kit 5Randomize Gene Sequences with New PCR Mutagenesis Kit 6Randomize Gene Sequences with New PCR Mutagenesis Kit 7Randomize Gene Sequences with New PCR Mutagenesis Kit 8Randomize Gene Sequences with New PCR Mutagenesis Kit 9Randomize Gene Sequences with New PCR Mutagenesis Kit 10Randomize Gene Sequences with New PCR Mutagenesis Kit 11The GeneZoo or the GeneJungle? 2The GeneZoo or the GeneJungle? 3The GeneZoo or the GeneJungle? 4The GeneZoo or the GeneJungle? 5The GeneZoo or the GeneJungle? 6The GeneZoo or the GeneJungle? 7The GeneZoo or the GeneJungle? 8The GeneZoo or the GeneJungle? 9The GeneZoo or the GeneJungle? 10Four New CastAway Precast Gels 2
... Genomic Labeling Systems are a high-performance labeling ... DNA samples for array-based Comparative Genomic Hybridization ... labeling formats, the BioPrime Plus Array CGH ... to your genomic labeling needs. Using ...
... effect inhibition assays, also known as CPE and ... supernatents; serum from PK studies and delivery formulations. ... as the quantity of interferon required per milliliter ... by 50%. All standards used in ...
Request Info...
...
Biology Products: