Navigation Links
Scientists Develop New Technology To Find About Human Ancestors’ Teet

Researchers from Johns Hopkins, the University of Arkansas, Worcester Polytechnic Institute //and other institutes have come together to develop a new way to examine the fossils of our ancestors’ teeth to predict how our diets have evolved through the ages and why.

By comparing teeth from two species of early humans, Australopithecus africanus and Paranthropus robustus, the researchers confirm previous evidence that A. africanus ate more tough foods, such as leaves, and P. robustus ate more hard, brittle foods. But they also revealed wear patterns suggesting that both species had variable diets. This new information implies that early humans evolved and altered their diet according to seasonal and other changes in order to survive said the researchers.

The new approach to studying dental microwear, the microscopic pits and scratches on the tooth surface caused by use, offers a more accurate measurement of the surface’s appearance and is described in the August 4 issue of Nature.

A team of scientists from the University of Arkansas and Worcester Polytechnic Institute developed the software, called “scale-sensitive fractal analysis,” to analyze fossilized tooth surfaces through a confocal microscope, which allows three-dimensional analysis of an object. The specimen is put in and the microscope is programmed to step down at fine intervals, perform its series of scans, and collect 3D coordinates for each data point. The result is like a map of the earth that shows mountains, valleys and plains in full relief, only at a microscopic scale.

As anticipated from traditional examination of fossilized teeth, the tooth surfaces of P. robustus were more pitted and complex, while those of A. africanus were more scratched, with features often running in more uniform directions. The study also revealed unexpected variability in the samples for each species and overlapping data for the two species. The researchers say this suggests that b oth species relied on their less preferred foods during periods of food scarcity.

Source: Newswise
br>
'"/>




Related medicine news :

1. Scientists plan human cloning clinic in the United States
2. Scientists found ancient Human Germ Killer
3. Scientists locate key hormone involved in appetite control
4. Scientists open the book of life
5. Scientists review SARS
6. Scientists crack dengue fever puzzle
7. Scientists push to lower hidden sodium in food
8. Indian Scientists Make Wide-Ranging Analysis And Annotation Of X Chromosome
9. Scientists have found effective brain regions for deep brain stimulation for Parkinson’s
10. Scientists reveal the secrets of sarcasm
11. Scientists Unveil Mechanism Behind Resistance to Severe Malaria
Post Your Comments:
*Name:
*Comment:
*Email:


(Date:10/13/2017)... Little Rock, AR (PRWEB) , ... October 13, ... ... owned firm with locations throughout Arkansas that offers insurance and financial preparation services, ... to benefit the Rock City Rescue organization. , Rock City Rescue is a ...
(Date:10/13/2017)... ... 2017 , ... PurhealthRX , a leading Health and Nutrition Company, is ... to full spectrum CBD oil will revolutionize the rapidly growing CBD market by reducing ... easily incorporated into liquid products, while reducing costs to end users. , The team ...
(Date:10/13/2017)... , ... October 13, 2017 , ... The Visiting Nurse ... Market. Featuring a collection of specialty vendors and unique items from across the nation, ... quality-focused health and wellness services offered by the VNA. The boutique will be ...
(Date:10/13/2017)... ... October 13, 2017 , ... ... Agile Software Development, has been awarded a contract by the Center for Medicare ... (BPA) aims to accelerate the enterprise use of Agile methodologies in a consistent ...
(Date:10/12/2017)... ... , ... Planet Fitness, one of the largest and fastest growing franchisors and ... flagship location in Covington, LA at 401 N. U.S. Highway 190, in January of ... Depot in the Holiday Square shopping center. Its location allows it to serve both ...
Breaking Medicine News(10 mins):
(Date:10/2/2017)... -- Halo Labs announces the European launch of their new low ... MIBio 2017 in Cambridge, U.K on October ... biopharmaceutical samples with unprecedented speed and sensitivity while using far less ... Imaging. ... analysis system ...
(Date:9/27/2017)... -- Commended for their devotion to personalized service, SMP Pharmacy Solutions ... in the South Florida Business Journal,s 50 Fastest-Growing Companies, and ... the national specialty pharmacy has found its niche.  To that ... be honored by SFBJ as the 2017 Power Leader in ... receive his award in October, Bardisa said of the three ...
(Date:9/23/2017)... Sept. 22, 2017 Janssen Biotech, Inc. (Janssen) ... letter from the U.S. Food and Drug Administration (FDA) ... sirukumab for the treatment of moderately to severely active ... clinical data are needed to further evaluate the safety ... active RA. ...
Breaking Medicine Technology: