HOME >> BIOLOGY >> NEWS
Ancient global warming drove early primates' dispersal

Ann Arbor, Mich. -- The continent-hopping habits of early primates have long puzzled scientists, and several scenarios have been proposed to explain how the first true members of the group appeared virtually simultaneously on Asia, Europe and North America some 55 million years ago.

But new research using the latest evidence suggests a completely different migration path from those previously proposed and indicates that sudden, rapid global warming drove the dispersal.

Researchers from the University of Michigan, Johns Hopkins University School of Medicine and the Royal Belgian Institute of Natural Sciences present their findings in the July 25 issue of the Proceedings of the National Academy of Sciences.

Their work focuses on Teilhardina, an ancient genus that resembled the saucer-eyed, modern-day primates known as tarsiers. Like tarsiers, monkeys, apes and humans, Teilhardina was a true primate, or euprimate. In both Asia and Europe, the genus is the oldest known primate; in North America, it appears in the fossil record around the same time as another primate, Cantius. Previously, scientists had come up with four ways to explain the geographic distribution pattern.

The first is that primates originated in Africa and spread across Europe and Greenland to reach North America. Another possibility is that they originated in North America and traveled across a temporary land bridge connecting Siberia and Alaska. A third hypothesis is that primates had their origins in Africa or Asia and traveled through North America to reach western Europe. Finally, it has been suggested that the group originated in Asia and fanned out eastward to North America and westward to Europe.

In the new research, U-M paleontologist Philip Gingerich and coworkers re-evaluated the four hypotheses by comparing with unprecedented precision the times of first appearance of Teilhardina in Asia, Europe, and North America. To achieve such preci
'"/>

Contact: Nancy Ross-Flanigan
rossflan@umich.edu
734-647-1853
University of Michigan
25-Jul-2006


Page: 1 2

Related biology news :

1. Ancient retrovirus sheds light on modern pandemic
2. Ancient Etruscans were immigrants from Anatolia, or what is now Turkey
3. Ancient DNA traces the woolly mammoths disappearance
4. Ancient amphibians evolved a bite before migrating to dry land
5. Ancient T. rex and mastodon protein fragments discovered, sequenced
6. Ancient coral reef tells the history of Kenyas soil erosion
7. Ancient genes used to produce salt-tolerant wheat
8. Ancient climate change may portend toasty future
9. Ancient ape ruled out of mans ancestral line
10. Ancient predator had strongest bite of any fish, rivaling bite of large alligators and T. rex
11. Ancient birds flew on all-fours

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:6/19/2020)... ... June 16, 2020 , ... The director of stem cell biotechnology company ... stem cell medicine and pharmaceutical industries have easier access to stem cell counting, they ... 5 of this year, Independence Day weekend in the U.S., Asymmetrex is offering free ...
(Date:6/13/2020)... ... June 11, 2020 , ... ... a significant expansion of its forensic genealogy team. Bode’s Forensic Genealogy Service ... proven forensic genealogy and DNA analysis methods. The team has added experienced genealogists, ...
(Date:6/5/2020)... ... 2020 , ... Murrieta Genomics has announced that its wholly owned ... preparation for Next Generation Genomic Sequencing (NGS) . This is the third application ... sample preparation. , “I have been at the bench for over 20 years,” stated ...
Breaking Biology News(10 mins):
(Date:7/7/2020)... SAN DIEGO (PRWEB) , ... July 06, 2020 , ... ... a new program featuring up to 200 million stem cells. Depending on the patient's ... of seniors in the US will die having some form of Alzheimers dementia, and ...
(Date:7/1/2020)... ... June 29, 2020 , ... ... growth of 40% in 2020, despite many obstacles created as a result of ... increase revenue for its partnered medical practices and medical manufacturers by expanding access ...
(Date:7/1/2020)... ... June 30, 2020 , ... ... today announced that the launch of a new clinical diagnostics immuno-oncology ... the tumor microenvironment (TME). , “Flagship’s TissueInsight is a service that aids ...
(Date:6/28/2020)... ... June 25, 2020 , ... With the COVID-19 pandemic impacting ... treatment. In an effort to better understand the cellular responses to COVID-19, the ... dataset portraying therapeutic compound effects from over 1,600 approved and referenced molecules on ...
Breaking Biology Technology:
Cached News: