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:4/29/2016)... ... April 30, 2016 , ... World Patent Marketing ... Up Springboard, an automotive invention that improves the storage features of a pick ... billion," says Scott Cooper, CEO and Creative Director of World Patent Marketing. "Over ...
(Date:4/29/2016)... ... April 29, 2016 , ... Since launching its annual ... foundation serving the footwear industry, has broken all previous participation records in its ... across 23 states during the months of April and May, the 2016 Footwear ...
(Date:4/29/2016)... ... April 29, 2016 , ... Our bodies are bombarded daily ... confront and deal with these stressors is to adopt a more healthful diet, but ... you. Risa Groux, a certified Holistic Nutritionist and the creator of the Newport Beach ...
(Date:4/29/2016)... CA (PRWEB) , ... April 29, 2016 , ... ... advocating optimistic healthcare awareness and author of best seller "LOVE, MEDICINE and MIRACLES") ... Radio Monday, May 2, 2016 and podcasted thereafter . Dr. Bernie Siegel, ...
(Date:4/29/2016)... ... April 29, 2016 , ... Coast Dental Fort Stewart is celebrating ... new location in the Exchange Furniture Mall at 112 Vilseck Road in Fort Stewart. ... Smart TV. Plus attendees will have the opportunity to meet general dentists Thomas Richards, ...
Breaking Medicine News(10 mins):
(Date:4/27/2016)... April 27, 2016 ... the  "Global Anesthesia Disposables Market 2016-2020"  report ... ) ,The global anesthesia disposables market ... of 4.03% during the period 2016-2020.  ... threat to patients, safety. Organizations like the ...
(Date:4/27/2016)... 2016 The global  gamma ... billion by 2022, according to a new report ... towards a healthy lifestyle is expected to drive ...      (Logo: http://photos.prnewswire.com/prnh/20150105/723757 ) , ... health treatment expenditure has urged consumers to switch ...
(Date:4/26/2016)... April 26, 2016 Hill-Rom Holdings, Inc. (NYSE: ... presentation at the Deutsche Bank 41 st Annual Health ... EDT. You are invited to listen to the ... or access it directly at http://edge.media-server.com/m/p/mr4uxgas . A recorded ... conclusion of the live event and accessible at the links ...
Breaking Medicine Technology: