Navigation Links
Fossil Suggests Humans Walked Upright 3 Million Years Ago
Date:2/10/2011

THURSDAY, Feb. 10 (HealthDay News) -- Researchers say they have found a fossilized foot bone that proves human ancestors were walking on two feet 3.2 million years ago.

The fossil of the midfoot bone (fourth metatarsal) shows that Australopithecus afarensis had a permanently arched foot and walked essentially the same as modern humans, according to researcher William Kimbel, of the Institute of Human Origins at Arizona State University, and colleagues.

The authors of the report said their finding resolves debate between experts who believe A. afarensis was bipedal and those who think the species used a form of locomotion that was a stepping stone between the four-limbed (quadrupedal) tree-climbing of chimpanzees and full bipedalism.

"This fourth metatarsal is the only known of A. afarensis and is a key piece of evidence for the early evolution of the uniquely human way of walking," Kimbel said in a news release from Arizona State University.

The fossil was found in Hadar, Ethiopia, which is the richest source of A. afarensis fossils in eastern Africa. "Lucy" is the best known fossil of this species.

"Understanding that the foot arches appeared very early in our evolution shows that the unique structure of our feet is fundamental to human locomotion," colleague Carol Ward, of the University of Missouri, said in the news release.

"If we can understand what we were designed to do and how natural selection shaped the human skeleton, we can gain insight into how our skeletons work today. Arches in our feet were just as important for our ancestors as they are for us," Ward added.

The study is published in the Feb. 11 issue of Science.

More information

PBS has more about the evolution of human bipedalism.

-- Robert Preidt
'/>"/>

Copyright©2010 ScoutNews,LLC.
All rights reserved  

Page: 1 2

Related medicine news :

1. Fossil Teeth of Neanderthals Reveal Fast Track to Maturity
2. A new view of fossils: The behavior of ancient life forms
3. Mouse Study Suggests New Clues to Celiac Disease
4. New research suggests tart cherries could speed muscle recovery
5. Video Suggests Mother Chimps May Grieve Death of an Infant
6. Research suggests V8 100% vegetable juice can help people meet key dietary guidelines
7. RIC study suggests researchers are entering a new era of advances in brain research
8. Study Suggests How Music Fools the Ear
9. Study suggests possible new treatment for severe 2009 H1N1 infection
10. Pill-Splitting Potentially Perilous, Study Suggests
11. Preoperative breast MRI suggests high cancer yield
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Fossil Suggests Humans Walked Upright 3 Million Years Ago
(Date:4/17/2014)... of Experimental Biology and Medicine a ... and Paul Kenis in the Institute of Genomic ... of Illinois Urbana-Champaign describe their recent work on ... variety of cell functions including energy metabolism, signaling, ... in regulating normal cellular behavior, redox status has ...
(Date:4/17/2014)... (April 17, 2014) Two recent papers by ... and colleagues may help scientists develop treatments or ... fever, Japanese encephalitis and other disease-causing flaviviruses. , ... and molecular genetics at the School of Medicine ... Hughes Medical Institute, and colleagues recently published articles ...
(Date:4/17/2014)... Pediatrician-in-Chief Jon McCullers, MD, was recently invited to ... Nature Reviews Microbiology , one of the ... world-renowned infectious disease specialist, and chair of the ... Health Science Center, analyzed the epidemiology and microbiology ... pandemics, as well as more recent 2009 novel ...
(Date:4/17/2014)... personnel who served in Iraq and Afghanistan and ... (TBI) were compared to military personnel without TBI ... in measures of overall disability, cognitive function, post-traumatic ... reported in an article in Journal of ... Liebert, Inc., publishers. The article is available free ...
(Date:4/17/2014)... many as 10 million older Americans suffer from depression, ... , However, new research a project that followed ... six years found that Internet use among the ... than 30 percent. , "That,s a very strong effect," ... telecommunication, information studies and media who led the project. ...
Breaking Medicine News(10 mins):Health News:Live cell imaging reveals distinct alterations of subcellular glutathione potentials 2Health News:CU researchers discover target for treating dengue fever 2Health News:Long-term effects of battle-related 'blast plus impact' concussive TBI in US military 2Health News:Internet use can help ward off depression among elderly 2
... Zofran, commonly given in children to limit vomiting can ... gastroenteritis //. A latest study released on Wednesday further ... ,Childhood gastroenteritis accounts for over 1.5 million ... being encouraged to drink an electrolyte solution for restoration ...
... achieved through a brisk walk through the park rather than a ... ,Weight loss is all about burning more calories than what ... the difference in body constitution is however not known clearly so ... question, the researchers initiated a study in which 14 women were ...
... are working out to find about the efficacy of ... research being conducted at the Methodist Neurological Institute, if ... be a better alternative for treating the patients. ... a greater impact than physical therapy on Parkinson’s patients, ...
... According to an analysis that was conducted by the London ... bird flu pandemic across Europe, it was found that serious ... existed. // The Czech Republic, Italy, Latvia, Lithuania, Romania, Poland ... that all the countries have to plan in such a ...
... the incidence of lawn mowing injuries, reveals a new study ... of Public Health. As many as 80, 000 Americans seek ... be a weekly ritual for many Americans during summer months ... the increase in incidence of lawn mowing injuries occurring in ...
... Victorian Eye and Ear Hospital in East Melbourne, Australia says ... the eye.// Doing so might actually slow healing and does ... found. ,“The abrasions on the eye normally don’t ... patient acutely monocular if there is no good reason to ...
Cached Medicine News:Health News:GlaxoSmithKline's Zofran Helps In Treatment Of Dehydration In Children 2Health News:Low-Intensity Exercise The Key To Losing More Pounds 2Health News:Joint Effort among Various Nations to Tackle Bird Flu 2Health News:Lawn Mowing Injuries On The Rise 2
(Date:1/15/2014)... NEW YORK , Jan. 15, 2014 ... research report is available in its catalogue: ... Technologies for Advanced Drug Delivery Systems -- ... http://www.reportlinker.com/p01940411/Global-Markets-and-Technologies-for-Advanced-Drug-Delivery-Systems----Focus-on-End-Users.html#utm_source=prnewswire&utm_medium=pr&utm_campaign=Drug_Delivery_Technology STUDY OBJECTIVES ...
(Date:1/15/2014)... 15, 2014  Zafgen, Inc., a leading biopharmaceutical company ... obese patients, today announced initial results from its ... of methionine aminopeptidase 2 (MetAP2), in patients with ... obesity.  These results showed improvements in body weight, ...
(Date:1/14/2014)... , Jan. 14, 2014 HeartWare International, Inc ... of less invasive, miniaturized circulatory support technologies that are ... that it expects revenues for the fourth quarter of ... 2013 revenues to approximately $208 million. "Our ...
Breaking Medicine Technology:Global Markets and Technologies for Advanced Drug Delivery Systems -- Focus on End Users 2Global Markets and Technologies for Advanced Drug Delivery Systems -- Focus on End Users 3Global Markets and Technologies for Advanced Drug Delivery Systems -- Focus on End Users 4Global Markets and Technologies for Advanced Drug Delivery Systems -- Focus on End Users 5Global Markets and Technologies for Advanced Drug Delivery Systems -- Focus on End Users 6Global Markets and Technologies for Advanced Drug Delivery Systems -- Focus on End Users 7Global Markets and Technologies for Advanced Drug Delivery Systems -- Focus on End Users 8Global Markets and Technologies for Advanced Drug Delivery Systems -- Focus on End Users 9Global Markets and Technologies for Advanced Drug Delivery Systems -- Focus on End Users 10Global Markets and Technologies for Advanced Drug Delivery Systems -- Focus on End Users 11Global Markets and Technologies for Advanced Drug Delivery Systems -- Focus on End Users 12Global Markets and Technologies for Advanced Drug Delivery Systems -- Focus on End Users 13Global Markets and Technologies for Advanced Drug Delivery Systems -- Focus on End Users 14Global Markets and Technologies for Advanced Drug Delivery Systems -- Focus on End Users 15Global Markets and Technologies for Advanced Drug Delivery Systems -- Focus on End Users 16Global Markets and Technologies for Advanced Drug Delivery Systems -- Focus on End Users 17Global Markets and Technologies for Advanced Drug Delivery Systems -- Focus on End Users 18Zafgen Announces Initial Results from Phase 2a Study of Beloranib in Patients with Prader-Willi Syndrome 2Zafgen Announces Initial Results from Phase 2a Study of Beloranib in Patients with Prader-Willi Syndrome 3Zafgen Announces Initial Results from Phase 2a Study of Beloranib in Patients with Prader-Willi Syndrome 4HeartWare International Announces Preliminary Fourth Quarter 2013 Revenues 2HeartWare International Announces Preliminary Fourth Quarter 2013 Revenues 3HeartWare International Announces Preliminary Fourth Quarter 2013 Revenues 4
... national reference laboratory and a worldwide leader ... offers an extensive test menu of highly ... and anatomic pathology. Owned by the University ... than half of the nation's university teaching ...
... is a national reference laboratory and a ... development. ARUP offers an extensive test menu ... in clinical and anatomic pathology. Owned by ... include more than half of the nation's ...
... a national reference laboratory and a worldwide ... ARUP offers an extensive test menu of ... clinical and anatomic pathology. Owned by the ... more than half of the nation's university ...
... national reference laboratory and a worldwide leader ... offers an extensive test menu of highly ... and anatomic pathology. Owned by the University ... than half of the nation's university teaching ...
Medicine Products: