Navigation Links
Fossil find puts a face on early primates
Date:7/14/2010

ANN ARBOR, Mich.---When paleontologist Iyad Zalmout went looking for fossil whales and dinosaurs in Saudi Arabia, he never expected to come face-to-face with a significant, early primate fossil.

But the skull he stumbled upon provides new insights into what the last common ancestor of apes and monkeys may have looked like and when the two lineages went their separate ways.

Zalmout and colleagues at the University of Michigan and the Saudi Geological Survey describe and interpret the fossil in a paper published online July 15 in the journal Nature.

It is well known that Old World monkeys and apes share ancestry, but exactly when the two branches split from the common trunk has been unclear. Debates also have swirled around the question of what sort of facial structure the progenitor of apes and monkeys had.

Both lineages belong to the primate group known as catarrhines. The earliest catarrhines in the fossil record, creatures that were neither monkey nor ape, date back to the late Eocene to early Oligocene epochs, 35 to 30 million years ago. Later fossils, from around 23 million years ago, suggest the split had already occurred by that time. But few fossil catarrhines from the interval between 30 million to 23 million years ago have been found, making it difficult for scientists to know precisely when monkeys and apes became distinctly separate groups and what catarrhines looked like around the time of the split.

The new fossil catarrhine, Saadanius hijazensis, dates from 29 million to 28 million years ago and lacks the specialized features that distinguish modern apes and Old World monkeys, suggesting that the split had not yet occurred. The researchers' analysis of the fossil leads them to believe its physical features are much like those of the last common ancestor of Old World monkeys and apes.

Zalmout, a postdoctoral fellow working with U-M paleontologist Philip Gingerich, found the fossil in
'/>"/>

Contact: Nancy Ross-Flanigan
rossflan@umich.edu
734-647-1853
University of Michigan
Source:Eurekalert

Page: 1 2 3 4

Related biology news :

1. Wallabies and bats harbor fossil genes from the most deadly family of human viruses
2. Green and fair economic growth with more expensive fossil fuels
3. Fossil-fuel use and feeding world cause greatest environmental impacts: UNEP panel
4. Reducing fossil energy use on the farm
5. First studies of fossil of new human ancestor take place at the European Synchrotron
6. Human fossil discovery -- evidence of new Homo species
7. Ecologists receive mixed news from fossil record
8. A new fossil species found in Spain
9. Can the morphology of fossil leaves tell us how early flowering plants grew?
10. Rare body parts find provides vital clues to identity of ancient fossil
11. Recently analyzed fossil was not human ancestor as claimed, anthropologists say
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:9/19/2014)... Nxt-ID, Inc. (Nasdaq: NXTD and NXTDW) ("Nxt-ID" or ... market, updates the "Wocket in Your Pocket" celebrity ad campaign, featuring ... weight classes, Vinny Pazienza (PAZ). , ... Thrones actor Ciaran Hinds and Sons of ... Sagal have been cast in Bleed for This . ...
(Date:9/18/2014)... Washington State University researchers have developed a unique method ... waste cleanup in rural areas. , The first ... inexpensive and quick way to clean up waste from ... reducing pollution. , Professor Haluk Beyenal and graduate ... and Architecture discuss the system in the online edition ...
(Date:9/18/2014)... in the primitive brainstem has revealed how we fall ... of Medicine and the University at Buffalo School of ... "sleep node" identified in the mammalian brain whose activity ... deep sleep. , Published online in August in ... of all of the brain,s sleep-promoting activity originates from ...
Breaking Biology News(10 mins):NXT-ID's Vinny Paz Celebrity Ad Wocket Update: Katey Sagal and Ciaran Hinds Attached to His Upcoming Movie 2NXT-ID's Vinny Paz Celebrity Ad Wocket Update: Katey Sagal and Ciaran Hinds Attached to His Upcoming Movie 3Researchers develop unique waste cleanup for rural areas 2No sedative necessary: Scientists discover new 'sleep node' in the brain 2
... the chemistry in romance-inspired classics like Mimi,s aria from La ... Tosca and that young lady pining for her man with ... article in ACS, Journal of Chemical Education , however, ... that intertwines famous operatic plots. Joo Paulo ...
... Santa Barbara are researching cocaine addiction, part of a ... of dollars in damage to individuals, families, and society. ... brain function and learning impairment that result from cocaine ... be restored. Karen Szumlinski, a professor in the ...
... February 13, 2013 A new test may help ... generating accurate results, avoiding unnecessary additional testing, and improving ... repeat primed PCR (TP PCR) methodology, yielded results that ... analysis of 246 samples. The high sensitivity and specificity ...
Cached Biology News:UCSB study of cocaine addiction reveals targets for treatment 2Novel test streamlines testing for Huntington Disease 2
(Date:9/19/2014)... 2014 , The first grants ... Paediatric Endocrinology (ESPE) Meeting  Investment supports innovative ... in the field of growth  , EMD ... Germany , today announced the first recipients of ... awards were announced during a Satellite Symposium organized by ...
(Date:9/18/2014)... About POCT POCT, ... clinical laboratory. It helps in making fast clinical ... medication. POCT is gaining popularity due to the ... as diabetes, heart disease, and obesity. It is ... to minimize errors during the diagnosis of patients. ...
(Date:9/18/2014)... , September 18, 2014 /PRNewswire/ ... Markets ( http://www.researchandmarkets.com/research/czvg3s/biocompatible ) has announced ... Materials - Global Strategic Business Report" ... (Logo: http://photos.prnewswire.com/prnh/20130307/600769) ,This report analyzes the ... US$ Million by the following Product ...
(Date:9/18/2014)... , Sept. 18, 2014 ... of the "Global N-acetylcysteine Industry Report 2014" ... The Global N-acetylcysteine Industry Report 2014 is a ... of the global N-acetylcysteine industry. The ... including definitions, classifications, applications and industry chain structure. ...
Breaking Biology Technology:EMD Serono Awards Grant for Growth Innovation (GGI) for the First Time 2EMD Serono Awards Grant for Growth Innovation (GGI) for the First Time 3POCT Market in China 2014-2018 2Biocompatible Materials - Global Strategic Business Report 2014 2Biocompatible Materials - Global Strategic Business Report 2014 3Global N-acetylcysteine Industry Report 2014 2
... Pretreatment , , SAN MATEO, Calif., June ... announced today that the U.S. Food and Drug Administration ... in patients with post-herpetic neuralgia (PHN) following pretreatment with ... new drug application (NDA) review, the FDA wants to ...
... on the momentum of their previous events, the Stem ... sixth Stem Cell Awareness Rally in Denver, Colorado on ... Gorda, Florida, drew past and prospective patients, news media, ... the public interested in learning more about stem cell ...
... Charles A. Dinarello, M.D., a Professor of Medicine at ... a member of the Techne Corporation Board of Directors, was ... On April 26, 2009, Dr. Dinarello, Ralph M. Steinman, M.D., ... The Scripps Research Institute , were the 2009 recipients ...
Cached Biology Technology:NeurogesX Provides U.S. Regulatory Update for Qutenza(TM) 2NeurogesX Provides U.S. Regulatory Update for Qutenza(TM) 3NeurogesX Provides U.S. Regulatory Update for Qutenza(TM) 4Colorado Stem Cell Awareness Rally to Take Place in Denver, Colorado on June 13th, 2009 2Colorado Stem Cell Awareness Rally to Take Place in Denver, Colorado on June 13th, 2009 3Techne Corporation Board Member Recognized 2
MAb to HSV-2, gG-2 HSV-2 Glycoprotein G-2...
... The INK4a-ARF locus encodes two unrelated proteins ... p14^ARF^ arrests the cell cycle in a ... promotes the rapid degradation of mdm2 proteinrequired ... and accumulation. This interaction is mediated ...
... contains a precipitant to ensure that the samples ... to allow the user to follow the progress ... ABgene ® s proprietary mixture of red ... composition used in ReddyRun™ molecular weight markers. It ...
Acetylcholinesterase from human and monkey....
Biology Products: