Navigation Links
New technology shows our ancestors ate…everything!

Using a powerful microscope and computer software, a team of scientists from Johns Hopkins, the University of Arkansas, Worcester Polytechnic Institute and elsewhere has developed a faster and more objective way to examine the surfaces of fossilized teeth, a practice used to figure out the diets of our early ancestors.

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 Mark Teaford, Ph.D., professor of functional anatomy and evolution at the Johns Hopkins School of Medicine.

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.

"Paleontologists and physical anthropologists have had a somewhat naive view on diet, in part due to the limitations of time-consuming, subjective approaches to analyzing teeth," said Teaford. "So it's a huge step to have a reliable technology that detects subtler diet variations."

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. "You put the specimen 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," said Teaford. The result is like a map of the earth that shows mountains, valleys and plains in f
'"/>

Source:Johns Hopkins Medical Institutions


Page: 1 2

Related biology news :

1. Novel technology detects human DNA mutations
2. Novel antiviral technology inhibits RSV infection in mice
3. The BIOS Initiative - open source biotechnology is born
4. Revolutionary nanotechnology illuminates brain cells at work
5. Study: homemade gene expression technology unreliable
6. First technology to remove prions that cause vCJD from blood launched
7. Integration of Agilents MS technology, Proteome Systems software to help scientists in proteomics research
8. Agilent Technologies new genome analysis technology set to accelerate Australia fight against mesothelioma
9. Recombinant DNA technology may enable oral, rather than injectable, delivery of protein drugs
10. First production of human monoclonal antibodies in chicken eggs published in Nature Biotechnology
11. Vietnam war technology could aid elephant conservation
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: New technology shows our ancestors ate

(Date:7/25/2014)... novel study shows that the age girls reach puberty is ... depending on which parent contributes the gene. This is ... of development after birth and details of this study were ... of the first period, known as menarche, is a marker ... shows that the onset of menses varies between girls, is ...
(Date:7/25/2014)... researchers have detected an unknown interaction between microorganisms and ... into a droplet of salt water and is left ... create biomineralogical biosaline 3D morphologically complex formations, where they ... revived. The discovery was made by chance with a ... Astrobiology journal and may help to find ...
(Date:7/24/2014)... how wildlife loss leads to conflict among people around ... Conservation Society (WCS) Health & Ecosystems: Analysis of Linkages ... interdisciplinary approach to tackle global biodiversity decline. , The ... the world,s people and provides protein for more than ... as no surprise that today,s unprecedented loss of wildlife, ...
Breaking Biology News(10 mins):Could age of first period influence development of diseases in older women? 2Bacteria manipulate salt to build shelters to hibernate 2New study draws links between wildlife loss and social conflicts 2
... Oct. 16, 2012  Today 23andMe, the leading personal ... as Vice President Communications, Neil Rothstein as Vice ... Strategic Alliances joining the company,s executive leadership team. ... Castro is responsible for the company,s corporate communications, ...
... MedNet Solutions, a global life sciences technology solutions ... & Data Corporation (SDC), a specialized Contract Research Organization ... services to the life sciences industry, are pleased to ... ™ EDC platform as their eClinical ...
... MOUNTAIN VIEW, Calif. and RAANANA, Israel, Oct. 23, ... ), the leading licensor of silicon intellectual property ... Ltd, a global supplier of embedded speech processing ... deliver enhanced speech processing solutions for smart devices, ...
Cached Biology News:23andMe Names Christine Castro, Neil Rothstein and Jonathan Ward to Leadership Positions 2Statistics & Data Corporation Selects MedNet Solutions As Strategic Technology Partner 2Statistics & Data Corporation Selects MedNet Solutions As Strategic Technology Partner 3CEVA, Rubidium Partner to Deliver Speech Processing Solutions based on the CEVA-TeakLite Family of DSPs 2CEVA, Rubidium Partner to Deliver Speech Processing Solutions based on the CEVA-TeakLite Family of DSPs 3
(Date:7/24/2014)... San Francisco, CA (PRWEB) July 24, 2014 ... Wednesday to be semi-finalists in Livestrong’s Big C Competition. ... Decisive Health are each headed to the semi-final round. ... in Livestrong’s exclusive three-month accelerator program, complete with mentoring ... country. , As part of the angelMD commitment ...
(Date:7/24/2014)... 2014  Neogen Corporation (Nasdaq: NEOG ) ... potential revenue from new rodenticide research are premature. In ... on July 22, 2014, Neogen,s CEO commented about several ... "It was my intent Tuesday at our ... a new type of rodenticide, but certainly not to ...
(Date:7/24/2014)... 24, 2014 1000 balances – 4 ... on customers’ weighing needs and expertly narrows down the ... balances, scales or even terminals. , First, select ... weight (or select readability instead) and define the accuracy ... selection criteria narrows down the list to models that ...
(Date:7/24/2014)... (PRWEB) July 24, 2014 Draper ... , is proud to announce that for 6 ... different countries will converge on the Draper University ... an intensive, experiential program focused on entrepreneurship, building ... selective school, currently running its sixth cohort, continues ...
Breaking Biology Technology:3 angelMD Startups Make Livestrong Big C Semi-finals 2Neogen comments on SenesTech 2Summer Entrepreneurship Program Kicked Off by Draper University in Silicon Valley 2Summer Entrepreneurship Program Kicked Off by Draper University in Silicon Valley 3
... 15 The Vical Incorporated,(Nasdaq: VICL ) ... on,Monday, September 22, at 1 p.m. Eastern Daylight ... through the Events page at http://www.vical.com ., ... biopharmaceutical products based on its,patented DNA delivery technologies ...
... BioMed Realty Trust, Inc.,(NYSE: BMR ) today announced ... dividend of $0.335 per share of common stock. The,dividend is ... BioMed also announced that its board of directors has ... Series A Cumulative,Redeemable Preferred Stock for the period from July ...
... of Institutional Investors to Attend Conference, MONTREAL, ... ("ProMetic"), today announced that Mr. Pierre Laurin, President,and ... Ford,s 5th,annual Investor Summit on September 16, 2008 ... the Mark Hopkins InterContinental Hotel in San Francisco., ...
Cached Biology Technology:Vical to Present at UBS Global Life Sciences Conference 2BioMed Realty Trust Declares Third Quarter 2008 Common Stock and Preferred Stock Dividends 2ProMetic to present at Merriman Curhan Ford's Investor Summit 2008 on September 16th 2