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:9/18/2014)... people are too stressed they are often grouchy, grumpy, ... Institute (BMI) at EPFL have just highlighted a fundamental ... and the loss of social skills and cognitive impairment. ... regulatory molecule in the brain. This was revealed by ... , Carmen Sandi,s team went to look for answers ...
(Date:9/18/2014)... the ideal animal in which to study the genes ... into tens of thousands of freshwater streams and lakes ... adapt to the new environment. , Breeding studies between ... up one of the genes that controls tooth number, ... regulation in a freshwater population is associated with a ...
(Date:9/18/2014)... invisible is probably the ultimate form of camouflage: you ... And this strategy is not as uncommon as you ... Baltimore County, USA, explains that the larval life stages ... one part of the anatomy that most creatures cannot ... eyes have to shield each individual eye unit with ...
Breaking Biology News(10 mins):How stress tears us apart 2Counting fish teeth reveals regulatory DNA changes behind rapid evolution, adaptation 2Counting fish teeth reveals regulatory DNA changes behind rapid evolution, adaptation 3Transparent larvae hide opaque eyes behind reflections 2
... five times as likely as U.S-born children to suffer from ... Health Department study, and the risk is highest among the ... lead poisoning in 2002, published online in the American Journal ... lived abroad within the previous six months were 11 times ...
... WASHINGTON, DECEMBER 19, 2007 - The National Fish ... grant to the Manomet Center for Conservation Sciences ... programs that address the decline of shorebird populations ... will be conducted by the Western Hemisphere Shorebird ...
... rattlesnake skin and smear it on their fur to ... study by researchers at UC Davis. Barbara Clucas, ... observed ground squirrels (Spermophilus beecheyi) and rock squirrels (Spermophilus ... pieces of shed snakeskin, chewing it and then licking ...
Cached Biology News:Study shows immigrant children are at increased risk of lead poisoning 2Study shows immigrant children are at increased risk of lead poisoning 3Manomet Center awarded major NFWF grant to foster shorebird conservation 2Manomet Center awarded major NFWF grant to foster shorebird conservation 3
(Date:9/18/2014)... , Sept. 18, 2014  U.S. biotech company ... signing an exclusive license for technology developed by the ... gene expression in plants, including for applications in production ... The technology was developed under the direction ... at Kultevat and former president of the Danforth Plant ...
(Date:9/18/2014)... , Sept. 18, 2014   Sigma-Aldrich ... today it has entered into a new gene ... Medical School,s Vector Core. Under the partnership, Sigma-Aldrich ... technology, experimental design consultation, and dedicated gene editing ... accelerate gene editing-based research at the U-M Medical ...
(Date:9/18/2014)... sweeteners, promoted as aids to weight loss and diabetes ... and metabolic disease; and they do it in a ... the gut microbiota the substantial population of bacteria ... experiments in mice and humans, were published today in ... Elinav of the Weizmann Institute,s Immunology Department, who led ...
(Date:9/18/2014)... September 18, 2014 Pipette.com announces ... Sartorius/Biohit, Socorex, Capp, and AccuPet brand of pipettes. ... 100 uL or less and are a great ... applications. , The micropipette promotions were designed ... economic alternative products to help customers find the ...
Breaking Biology Technology:Kultevat obtains license of gene switch technology 2Sigma-Aldrich, University of Michigan Medical School Establish CRISPR Core Lab Partnership 2Sigma-Aldrich, University of Michigan Medical School Establish CRISPR Core Lab Partnership 3Sigma-Aldrich, University of Michigan Medical School Establish CRISPR Core Lab Partnership 4Gut bacteria, artificial sweeteners and glucose intolerance 2Gut bacteria, artificial sweeteners and glucose intolerance 3Major Pipette Distributor Pipette.com Announces Promotions on Sartorius/Biohit, Socorex, Capp, and AccuPet Micropipettes 2Major Pipette Distributor Pipette.com Announces Promotions on Sartorius/Biohit, Socorex, Capp, and AccuPet Micropipettes 3
... broad corporate changes are ... ... Board: AVNA) today reported financial results for its first,quarter ended March ... Company refocused its business model from managing the,development of a portfolio ...
... Technology Distributors ... 2007., PLEASANTON, Calif., May 19 Direct Medical ... distribution network covering all,of Russia. This partnership has resulted ... volume sales to a number of medical,providers in Russia., ...
... W. Freston Single Topic Conference Series for ... Gastroenterology ... (AGA) Foundation for Digestive Health and Nutrition (FDHN),announced a gift ... Fund within the AGA Foundation,s overall endowment.,Interest earned from The ...
Cached Biology Technology:Advance Nanotech Reports First Quarter 2008 Financial Results 2Advance Nanotech Reports First Quarter 2008 Financial Results 3Advance Nanotech Reports First Quarter 2008 Financial Results 4Advance Nanotech Reports First Quarter 2008 Financial Results 5Advance Nanotech Reports First Quarter 2008 Financial Results 6Advance Nanotech Reports First Quarter 2008 Financial Results 7Advance Nanotech Reports First Quarter 2008 Financial Results 8Advance Nanotech Reports First Quarter 2008 Financial Results 9Advance Nanotech Reports First Quarter 2008 Financial Results 10Direct Medical Systems Reaches Profitability in 2-1/2 Years, as a Result of Sales of the World's Smallest and Lightest Ultrasound System, the InNovaSound USB Ultrasound. 2Takeda Pharmaceuticals Establishes $3 Million Endowment with AGA Foundation 2Takeda Pharmaceuticals Establishes $3 Million Endowment with AGA Foundation 3Takeda Pharmaceuticals Establishes $3 Million Endowment with AGA Foundation 4
Request Info...
... Bean Nuclease catalyzes the degradation of single-stranded ... terminated products. While the nuclease prefers ssDNA ... concentrations the enzyme degrades double-stranded DNA from ... been used for transcript mapping studies (3,4), ...
... fosmid (40kb), and large plasmid insert (10-20kb) ... BAC vector. On command 20-50 fold copy ... DNA purification. Available with blue-white screening (pEZ ... the highest insert stability. Kits include electrocompetent ...
...
Biology Products: