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:10/14/2014)... have sequenced the house fly genome for the first ... from an insect that thrives in pathogen-rich dung piles ... in the journal Genome Biology , will increase ... how flies quickly adapt to resist insecticides, which could ... (Musca domestica) carry and transmit more than 100 human ...
(Date:10/14/2014)... Montreal, October 14, 2014 – High doses of fish oil ... fibrillation, a common type of irregular heartbeat in which the ... The results of the AFFORD trial led by the Montreal ... American College of Cardiology on October 7th. , For ... antiarrhythmic therapy were randomly assigned to 4 grams of fish ...
(Date:10/14/2014)... international team of researchers, led by the Chinese Academy ... Nature Genetics a brief genomic history of ... the tomato plant. , The C.M. Rick Tomato Genetics ... in this study by providing seed of both cultivated ... which builds on the first tomato genome sequence completed ...
Breaking Biology News(10 mins):House fly genome reveals expanded immune system 2
... scale of seasonal changes in a habitat help determine ... always travel together to the same place or independently ... in February in Global Ecology and Biogeography by the ... The study,s findings have significant implications for ...
... researchers recovered from an Andes Mountains lake reveals that ... densely populated tropical regions will most likely experience severe ... The Pitt team found that equatorial regions of South ... point in the past millennium. The researchers report ...
... WALNUT CREEK, Calif.The U.S. Department of Energy (DOE) ... a grant to DOE Joint Genome Institute scientist Susannah ... (metagenomes) in restored wetlands around the San Francisco Bay-Delta ... DOE JGI Metagenome Program, and 64 other applicants had ...
Cached Biology News:Smithsonian scientists report changes in vegetation determine how animals migrate 22,300-year climate record suggests severe tropical droughts as northern temperatures rise 22,300-year climate record suggests severe tropical droughts as northern temperatures rise 3JGI's Susannah Tringe receives prestigious $2.5M DOE Early Career Research Award 2
(Date:10/20/2014)... 2014 , A major pan-European ... the delivery of care has revealed changing trends in ... in the provision of healthcare services across the continent. ... United European Gastroenterology (UEG), have been announced today and ... of the burden of GI disorders across ...
(Date:10/20/2014)... Local veterinary surgeon, Dr. Tim McCarthy ... of donor stem cells for dogs with osteoarthritis. Dr. ... has performed clinical stem cell therapy for 7 years. ... if a single injection of donor stem cells into ... pain and inflammation in the treated joints. , ...
(Date:10/19/2014)... October 19, 2014 The Asian Automatic ... Asian with analysis and forecast of revenue. The Automatic ... to around $463.9 million by 2018, at a developing ... through the TOC of the Asian Automatic patient billing ... provided. This also provides a glimpse of the segmentation ...
(Date:10/19/2014)... According to market research report “Outdoor Wi-Fi ... gateways)]- Global Advancements, Forecasts and Analysis (2013 - ... market with analysis and forecasting of the global ... drivers and the restrains for this market with ... , Browse 65 market data tables and 69 ...
Breaking Biology Technology:Major Survey Reveals Changing Trends and Inequalities in Healthcare Provision for Gastrointestinal Disorders Across Europe 2Major Survey Reveals Changing Trends and Inequalities in Healthcare Provision for Gastrointestinal Disorders Across Europe 3Major Survey Reveals Changing Trends and Inequalities in Healthcare Provision for Gastrointestinal Disorders Across Europe 4Major Survey Reveals Changing Trends and Inequalities in Healthcare Provision for Gastrointestinal Disorders Across Europe 5Cascade Veterinary Referral Center Seeks Candidates for an Investigational Study of Stem Cells for Dogs with Arthritis 2The Asian Automatic patient billing market is estimated to grow to around $463.9 million by 2018 - New Report by MicroMarket Monitor 2The Asian Automatic patient billing market is estimated to grow to around $463.9 million by 2018 - New Report by MicroMarket Monitor 3Outdoor Wi-Fi Market (by Access Points, WLAN Controllers, Wireless gateways) Expected to Cross $37.2 Billion by 2018 - New Report by MarketsandMarkets 2Outdoor Wi-Fi Market (by Access Points, WLAN Controllers, Wireless gateways) Expected to Cross $37.2 Billion by 2018 - New Report by MarketsandMarkets 3Outdoor Wi-Fi Market (by Access Points, WLAN Controllers, Wireless gateways) Expected to Cross $37.2 Billion by 2018 - New Report by MarketsandMarkets 4
... Inc. (Nasdaq: SEPR ), FRAMINGHAM, Mass. ... HTW) today announced that,veteran healthcare executive Timothy J. ... non- executive director, effective immediately., Barberich, 60, ... and chairman of Marlborough, MA-based Sepracor Inc., a ...
... ALEHT), a drug and diagnostic discovery company, announces,changes ... shareholders, meeting of the Company, that was,held on ... appointment as,member of the Supervisory Board, and as ... the age limit defined in the Company by-laws. ...
... EMERYVILLE, Calif., April 29 Onyx,Pharmaceuticals, Inc. (Nasdaq: ... with management to discuss first quarter 2008 financial,results and ... 2008, at,5:00 p.m. Eastern Time (2:00 p.m. Pacific Time). ... will be released earlier that day., Interested parties ...
Cached Biology Technology:HeartWare Appoints Timothy J. Barberich to Board of Directors 2Frederic Desdouits Appointed Member of the Supervisory Board of ExonHit Therapeutics 2Frederic Desdouits Appointed Member of the Supervisory Board of ExonHit Therapeutics 3
... T4 Polynucleotide Kinase (PNK) catalyzes the ... to the 5'-hydroxyl of single- and ... The enzyme also removes the 3'-phosphate ... deoxyribonucleoside 3', 5'-diphosphates to form a ...
MOUSE ANTI GTP BINDING PROTEIN...
We offer solid and solution phase peptide synthesis including a whole range of modifications. Please send the details of your peptide synthesis need to info@rpeptide.com...
Maxi XL Hybridization Oven for Extra Large bottles. 6 bottle (70 mm) rotisserie + shaker tray available for simultaneous use. Includes linear and orbital shaker trays, 4 extra large bottles, pack o...
Biology Products: