Navigation Links
Fossil teeth and human development

An analysis of the growth patterns in fossil teeth has thrown new light on the recent origin of the extended growth and development pattern that sets human beings apart from their primate ancestors, according to an article in the issue of Nature.//

Based on the analysis of the fossil teeth, researchers from University College, London and Penn State University determined that the relatively long 15 to 25 year development period of humans compared with 11 or 12 years for primates — came about more recently in the evolutionary process than previously thought. "Dental development is a good measure of overall growth and development," study author Alan Walker, professor of anthropology and biology at Penn State University, said in a news release. "Teeth grow in an incremental manner like trees or shells, preserving a record of their growth with daily marks along the prisms that make up the enamel."

By making thin sections of modern and fossil teeth, the researchers were able to count the daily incremental markings with the enamel of humans, apes and fossil "hominin" species to measure up the rates of tooth formation. Based on the dental validation, the human-like development period does not appear until the Neanderthal period about 100,000 years ago.

Previous theories placed this evolutionary milestone as far back as 1.5 million years ago, corresponding with the first evidence of modern human-like characteristics such as body proportions, body weight and small teeth and jaws. "It seems our prolonged period of growth and development may be a more recent evolutionary acquisition that arose in step with our comparatively recent development of a larger, modern, human-sized brain," Dr. Walker said.


'"/>




Page: 1

Related medicine news :

1. Well Preserved DNA In Fossil Bones Discovered
2. Global Warming 55 Million Years Ago Too, Thanks to Fossil Fuels
3. Fewer teeth & Increased Ischemic Stroke risk
4. Sensitive to bright light? You may have sensitive teeth also
5. Ways to whiter teeth!
6. Less is more for preserving teeth and gums
7. Should we avoid energy drinks to protect our teeth?
8. Crooked teeth may be due to evolution and overcooked meals
9. Quit smoking to save your teeth
10. Sensitive teeth could become bad memories
11. And now candy that is good for your teeth!
Post Your Comments:
*Name:
*Comment:
*Email:


(Date:6/24/2016)... ... ... A recent article published June 14 on E Online details ... to state that individuals are now more comfortable seeking to undergo not only the ... and cheek reduction. The Los Angeles area medical group, Beverly Hills Physicians (BHP) notes ...
(Date:6/24/2016)... ... 2016 , ... June 19, 2016 is World Sickle Cell Observance Day. In ... benefits of holistic treatments, Serenity Recovery Center of Marne, Michigan, has issued ... Sickle Cell Disease (SCD) is a disorder of the red blood cells, which can ...
(Date:6/24/2016)... (PRWEB) , ... June 24, 2016 , ... ... Conference and Scientific Sessions in Dallas that it will receive two significant new ... the grants came as PHA marked its 25th anniversary by recognizing patients, medical ...
(Date:6/24/2016)... ... June 24, 2016 , ... Dr. ... accelerated orthodontic treatment. Dr. Cheng has extensive experience with all areas of orthodontics, ... and accelerated osteogenic orthodontics. , Micro-osteoperforation is a revolutionary adjunct to orthodontic ...
(Date:6/24/2016)... ... June 24, 2016 , ... Topical BioMedics, Inc, makers of Topricin and MyPainAway Pain Relief ... a minimum wage raise to $12 an hour by 2020 and then adjusting it yearly ... lost value of the minimum wage, assure the wage floor does not erode again, and ...
Breaking Medicine News(10 mins):
(Date:6/23/2016)... Revolutionary technology includes multi-speaker listening ... industry leaders in advanced audiology and hearing aid technology, ... ™, the world,s first internet connected hearing aid that ...      (Photo: http://photos.prnewswire.com/prnh/20160622/382240 ) , ... ,world firsts,: , TwinLink™ - the first ...
(Date:6/23/2016)... 23, 2016 The vast majority of dialysis ... facility.  Treatments are usually 3 times a week, with ... including travel time, equipment preparation and wait time.  This ... grueling for patients who are elderly and frail.  Many ... and rehabilitation centers for some duration of time. ...
(Date:6/23/2016)... FRANKLIN, Tenn. , June 23, 2016 ... for automating, integrating and transforming the patient ... launch of several innovative new products and ... depth of its revenue cycle offerings. These ... establish more efficient workflows, remain compliant in ...
Breaking Medicine Technology: