Navigation Links
Earliest sea cow ancestors originated in Africa, lived in fresh water
Date:1/16/2013

A new fossil discovered in Tunisia represents the oldest known ancestor of modern-day sea cows, supporting the African origins of these marine mammals. The find is described in research published January 16 in the open access journal PLOS ONE by Julien Benoit and colleagues from the University of Science and Technology in Montpellier, France.

Some fossils of sea cow ancestors have been found in Jamaica, but the Tunisian fossil is more primitive and pre-dates these, revealing an older ancestor for sea cows that emerged at the same time as other modern mammals. Unlike whales and dolphins, the evolutionary origins of the sea cow family have been obscure.

They share an ancestor with elephants, and it is thought that their oldest relatives were terrestrial animals that gradually adapted to an aquatic life. The last common ancestor of the two species may have lived in freshwater swamps well before the time that the new species described in this study lived. Though this specimen may not have been the common link between modern day sea cows and elephants, the authors' analyses suggest that this new species lived in fresh water, not sea waters.


'/>"/>

Contact: Jyoti Madhusoodanan
jmadhusoodanan@plos.org
415-568-4545
Public Library of Science
Source:Eurekalert

Page: 1

Related biology news :

1. Streams show signs of degradation at earliest stages of urban development
2. Chimpanzee ground nests offer new insight into our ancestors descent from the trees
3. What did our ancestors look like?
4. Farmer-led irrigation schemes could alter food security in sub-Saharan Africa, South Asia
5. Mystery to the origin of long-lived, skin-deep immune cells uncovered
6. New method for creating long-lived stem cells used for bone replacement
7. Unexpected crustacean diversity discovered in northern freshwater ecosystems
8. USF study: Common fungicide wreaks havoc on freshwater ecosystems
9. North American freshwater fishes race to extinction
10. Potent human toxins prevalent in Canadas freshwaters
11. U OF A expert pinpoints nutrient behind fresh water algae blooms
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:8/19/2015)... N.Y. , Aug. 19, 2015  VOXX ... that it has entered into a Definitive Agreement ... property, of iris authentication market leader EyeLock through ... VOXX will have a controlling interest in the ... subject to completion of due diligence.  Expanding on ...
(Date:8/17/2015)... -- NXT-ID, Inc. (NASDAQ: NXTD ) ("NXT-ID" or the ... mobile commerce market and creator of the Wocket® smart ... The new marketing campaign is being spearheaded by an ... ( http://amplitudemarketing.com/ ) and TPMG ( http://tmpg.com/ ). ... driven marketing and brand awareness and has a client ...
(Date:8/12/2015)...  New research unveiled at Black Hat 2015 ... steal users, fingerprints. Information released today by HYPR ... on mobile devices, making the security of this ... mobile devices, HYPR Corp. recently released a biometric ... with strong cryptographic security. More information on this ...
Breaking Biology News(10 mins):VOXX International Corporation Signs Definitive Agreement To Acquire The Assets And A Controlling Interest Of Biometric Leader EyeLock 2VOXX International Corporation Signs Definitive Agreement To Acquire The Assets And A Controlling Interest Of Biometric Leader EyeLock 3VOXX International Corporation Signs Definitive Agreement To Acquire The Assets And A Controlling Interest Of Biometric Leader EyeLock 4VOXX International Corporation Signs Definitive Agreement To Acquire The Assets And A Controlling Interest Of Biometric Leader EyeLock 5NXT-ID, Inc. Launches Sales Campaign for Wocket Smart Wallet with Award Winning Marketing Team 2NXT-ID, Inc. Launches Sales Campaign for Wocket Smart Wallet with Award Winning Marketing Team 3HYPR Corp. Addresses Android Vulnerability That Exposes Ecosystem-wide Biometric Security Challenges 2HYPR Corp. Addresses Android Vulnerability That Exposes Ecosystem-wide Biometric Security Challenges 3
... BGI the world,s largest genomic organization and Johns ... for the synthetic yeast project (SC2.0 PROJECT), an ambitious ... the yeast genome. This project was initiated by JHU ... In addition to the research collaboration of SC2.0 ...
... people in North America are afflicted with dystonia, a ... Patients with generalized dystonia grapple with involuntary muscle spasms ... sometimes painful postures. Although cognition, intelligence and life span ... impact on quality of life, as its victims frequently ...
... are most likely to become obese by examining their mothers, ... Montreal study published in the Archives of Pediatric and ... and is also influenced by a complex tangle of influencing ... improve the social and medical services we offer to mothers ...
Cached Biology News:BGI announces collaboration with Johns Hopkins University on synthetic yeast project 2BGI announces collaboration with Johns Hopkins University on synthetic yeast project 3University Hospitals Case Medical Center unlocks mystery of dystonia with advanced imaging 2University Hospitals Case Medical Center unlocks mystery of dystonia with advanced imaging 3Future obesity may be predicted at 3.5 years of age 2
(Date:8/28/2015)... ... ... of FireflySci Inc. (FFS) in early 2015, the company continues to shake up the cuvette ... in a lab coat and Large Marge have been posted on the company’s Facebook page ... is proud to be the only cuvette manufacturer is the world that has an online ...
(Date:8/27/2015)... /PRNewswire/ - Portage Biotech Inc. ("Portage") (OTC Market: ... Holding Company Limited (Biohaven), announced today that dosing ... BHV-0223, a glutamate modulating agent. Biohaven filed an ... obtained clearance from the U.S. Food and Drug ... holds 54% equity interest in Biohaven, a private ...
(Date:8/27/2015)... 27, 2015 HUYA Bioscience International (HUYA) today announced ... Japan Society of HTLV-1, held this week at the ... of the Society is to promote research on HTLV-1 ... medical technology and research related to these fields to ... "HUYA is proud to support this prestigious conference," said ...
(Date:8/27/2015)... N.C. , Aug. 27, 2015 ... decision by FedEx, UPS and The US Postal ... biological specimens classified as ,select agents, by the ... history of handling these sensitive shipments. ... global transportation regulations, trained and certified personnel to ...
Breaking Biology Technology:Cuvette Manufacturer FireflySci Launches Back to School Deals with Complimentary Shipping On All Orders 2Portage's Biohaven doses first human subject in Phase 1 trial with lead drug candidate BHV-0223 2Portage's Biohaven doses first human subject in Phase 1 trial with lead drug candidate BHV-0223 3Portage's Biohaven doses first human subject in Phase 1 trial with lead drug candidate BHV-0223 4HUYA Bioscience International Sponsors Japan Society Of HTLV-1 Annual Meeting 2HUYA Bioscience International Sponsors Japan Society Of HTLV-1 Annual Meeting 3HUYA Bioscience International Sponsors Japan Society Of HTLV-1 Annual Meeting 4Marken Ensures Safe Transportation Of Select Agents And Toxins 2
... Actavis Group, the,international generic pharmaceuticals company, today ... U.S. Food & Drug Administration to market,Fentanyl ... begin,immediately. Fentanyl Transdermal System is the ... 25, 50, 75 and 100 mcg/hour strengths.,Fentanyl ...
... (Euronext: AMT), a leader in the field of human ... results for the first,six months of 2007 on Wednesday, ... To discuss these results, the Company will conduct ... +31-800-949-4517 (toll free); US Dial In:,+1-866-291-4166 (toll free); UK ...
... Company confirms commercial expression levels of ... status of native Apo AI -, CALGARY, ... biotechnology company developing a portfolio of therapeutic,proteins for ... on July 12, 2007 announcing that the Company ...
Cached Biology Technology:Actavis Receives Approval of Fentanyl Transdermal System in the U.S. 2SemBioSys updates Apo AI development program 2SemBioSys updates Apo AI development program 3SemBioSys updates Apo AI development program 4
Porcine Coronary Artery Smooth Muscle Cells (PCASMC) (>500,000 cells)...
alpha-N-Catenin Antibody Shipping Temperature: HOT Storage Temperature: -20C...
Image Acquisition and documentation system for fluorescent and non-fluorescent gels, membranes, blots, film, plates and assays...
PC based system for superior chemifluorescent, chemiluminescent, fluorescent and colorimetric, microarray and microscope imaging and analysis....
Biology Products: