Navigation Links
Man's earliest direct ancestors looked more apelike than previously believed

Modern man"s earliest known close ancestor was significantly more apelike than previously believed, a New York University College of Dentistry professor has found.

A computer-generated reconstruction by Dr. Timothy Bromage, a paleoanthropologist and Adjunct Professor of Biomaterials and of Basic Science and Craniofacial Biology, shows a 1.9 million-year-old skull belonging to Homo rudolfensis, the earliest member of the human genus, with a surprisingly small brain and distinctly protruding jaw, features commonly associated with more apelike members of the hominid family living as much as three million years ago.

Dr. Bromage"s findings call into question the extent to which H. rudolfensis differed from earlier, more apelike hominid species. Specifically, he is the first scientist to produce a reconstruction of the skull that questions renowned paleontologist and archeologist Richard Leakey"s depiction of modern man"s earliest direct ancestor as having a vertical facial profile and a relatively large brain ?an interpretation widely accepted until now.

Dr. Bromage"s reconstruction also suggests that humans developed a larger brain and more vertical face with a less pronounced jaw and smaller teeth at least 300,000 years later than commonly believed, perhaps as recently as 1.6 million to one million years ago, when two later species, H. ergaster and H. erectus, lived. Dr. Bromage presented his findings today at the annual scientific session of the International Association for Dental Research in New Orleans.

The fragmented skull Dr. Bromage reconstructed was originally discovered in Kenya in 1972 by Dr. Leakey, who reassembled it by hand and dated it at nearly three million years of age, an estimate revised to 1.9 million years by scientists who later discovered problems with the dating.

"Dr. Leakey produced a biased reconstruction based on erroneous preconceived expectations of early human appearance that violate
'"/>

Source:New York University


Page: 1 2

Related biology news :

1. Mans best friend: Study shows lonely seniors prefer playtime with pooch over human interaction
2. Mans best friend lends insight into human evolution
3. Unchecked DNA replication drives earliest steps toward cancer
4. The earliest animals had human-like genes
5. Embryos tell story of Earths earliest animals
6. Combination therapy boosts effectiveness of telomere-directed cancer cell death
7. BRCA1 causes ovarian cancer through indirect, biochemical route
8. Poplar trees redirect resources in response to simulated attack
9. Weizmann Institute scientists develop a new approach for directing treatment to metastasized prostate cancer in the bones.
10. Cerebral navigation: How do nerve fibers know what direction to grow in?
11. Stem cells bring fast direct improvement, without differentiation, in acute renal failure
Post Your Comments:
(Date:8/20/2014)...  The second annual Biometrics UnPlugged Executive Summit, ... Florida on September 15, 2014, will ... and Strategy at Samsung, and Philippe de Raet, Vice ... this year,s event is Mobility at the Crossroads ... UnPlugged: Mobility at the Crossroads of Commerce & ...
(Date:8/19/2014)... 19, 2014 To improve students, chances of ... the University of Houston (UH) implemented a comprehensive ... at risk for failure. , Through a ... (THECB), the Department of Biology and Biochemistry embarked ... taking "General Biology" for non-majors and "Introductory Biology" ...
(Date:8/19/2014)... German . ... If a large amount of electricity is to be produced ... have to be stored during productive periods so that these ... far from adequate for the purpose. Science and industry are ... on battery systems that used to be too expensive or ...
Breaking Biology News(10 mins):Biometrics UnPlugged: Mobility at the Crossroads of Commerce & Privacy to Feature Interactive Sessions with Samsung and Experian 2University of Houson program earns kudos for improving grades, retaining students 2University of Houson program earns kudos for improving grades, retaining students 3Asian inventions dominate energy storage systems 2Asian inventions dominate energy storage systems 3
... Boston, MA Using 120 years of feathers ... University researchers have been able to track increases in ... nigripes ), an endangered seabird that forages extensively throughout ... the observed increase in methylmercury levels, most likely from ...
... University of the Negev software engineering students have developed ... computer without using a keyboard or mouse only ... to develop devices to read brainwaves and operate specific ... a laboratory setting. The BGU ...
... April 18, 2011 Mention vitamin D-fortified foods and ... with the sunshine vitamin since the 1930s. A new ... Challenges/Chemistry Solutions" podcast series says that vitamin D-fortified bread ... essential nutrient that is difficult to get naturally in ...
Cached Biology News:Mercury on the rise in endangered Pacific seabirds 2
(Date:8/20/2014)... Aug. 20, 2014  Decision Resources Group finds that the vascular ... Russia , India and ... 2013, roughly equal to the size of the United ... market will experience much faster growth as a result of strong ... Other key findings from Decision Resources Group,s coverage of the ...
(Date:8/20/2014)... Stimulating nerves in your ear could improve the health ... at the University of Leeds used a standard TENS ... apply electrical pulses to the tragus, the small raised ... front of the ear canal. , The stimulation changed ... by reducing the nervous signals that can drive failing ...
(Date:8/19/2014)... Research and Markets  has announced the addition of ... Report" report to their offering. This report ... US$ Thousands by the following Product Segments: Media, Sera, and Reagents. ... Canada , Japan , ... Latin America . Annual estimates and forecasts are provided ...
(Date:8/19/2014)... Lenexa, KS (PRWEB) August 19, 2014 ... to offer fast and cost-effective metabolite production from ... and proprietary chemistry platform, the technology enables convenient ... issues. According to XenoTech’s Vice President of ... metabolite synthesis for assessing clinical risk can be ...
Breaking Biology Technology:BRIC Vascular Access Device Market Valued at $1.6 Billion in 2013, Similar to the U.S. Market 2BRIC Vascular Access Device Market Valued at $1.6 Billion in 2013, Similar to the U.S. Market 3'Tickling' your ear could be good for your heart 2Global Cell and Tissue Culture Supplies - Strategic Business Report 2014 2Beyond Metabolite Identification, Testable Quantities Now Offered by XenoTech 2Beyond Metabolite Identification, Testable Quantities Now Offered by XenoTech 3
... 22 Edwards Lifesciences,Corporation (NYSE: EW ... of heart valves,today announced the opening of ... North Crescent, Singapore. The state-of-the-art facility produces,Edwards, ... also serves as the headquarters for Edwards, ...
... 22 Celldex,Therapeutics (a wholly-owned subsidiary of AVANT,Immunotherapeutics)(Nasdaq: ... product,candidate, CDX-110, being developed for the treatment of ... oral presentation at the 44th,Annual Meeting of the ... will be held at McCormick Place in Chicago ...
... to Add Valuable Clinical Development Expertise, SAN ... company focused on the development of novel Toll-Like,Receptor ... respiratory and,autoimmune diseases, announced today the appointment of ... "We are pleased to have Elliott join our ...
Cached Biology Technology:Edwards Lifesciences Opens New Singapore Heart Valve Facility 2AVANT Immunotherapeutics Announces Oral Presentation of CDX-110 at ASCO Annual Meeting 2AVANT Immunotherapeutics Announces Oral Presentation of CDX-110 at ASCO Annual Meeting 3VentiRx Pharmaceuticals Appoints Dr. Elliott Grossbard to Board of Directors 2
...
RABBIT ANTI HUMAN ALPHA-2-ANTIPLASMIN...
... mix (Thermoprime Plus DNA Polymerase with a ... times higher fidelity than standard Taq DNA ... DNA polymerase, Amplifies DNA templates >20kb, Concentration: ... PCR for cloning and mutagenesis We are ...
... EnzChek Lysozyme Assay Kit (E-22013) provides,researchers ... levels of lysozyme,activity in solution. This ... to 20 U/mL (Figure 1). The ... cell,walls, which are labeled to such ...
Biology Products: