Navigation Links
Fossil evidence of missing link in the origin of seals, sea lions, walruses found in Canadian Arctic
Date:4/22/2009

e in On the Origin of Species by the Means of Natural Selection, "A strictly terrestrial animal, by occasionally hunting for food in shallow water, then in streams or lakes, might at last be converted in an animal so thoroughly aquatic as to brace the open ocean."

"The find suggests that pinnipeds went through a freshwater phase in their evolution. It also provides us with a glimpse of what pinnipeds looked like before they had flippers," says Natalia Rybczynski, leader of the field expedition.

The animal is described as having a long tail, and fore-limbs comparatively proportionate to modern carnivorous land animals as opposed to pinnipeds. It is the first mammalian carnivore found at the site. Other fossils found include two taxa of freshwater fishes, one bird, and four mammalian taxa: shrew, rabbit, rhinoceros, and small artiodactyl (small short-legged herbivores, ancestors to modern giraffes and deer).

The earliest well-represented pinniped, Enaliarctosa marine form with flippershas been found on northern Pacific shores of North America. It had been theorized for some time that pinniped evolution had been centered around the Arctic; the discovery of Puijila adds credence to this theory.


'/>"/>

Contact: Laura Sutin
lsutin@mus-nature.ca
613-566-7493
Carnegie Museum of Natural History
Source:Eurekalert  

Page: 1 2

Related biology news :

1. Fossils suggest earlier land-water transition of tetrapod
2. Fossil fragments reveal 500-million-year-old monster predator
3. Cretaceous octopus with ink and suckers -- the worlds least likely fossils?
4. One-fifth of fossil-fuel emissions absorbed by threatened forests
5. Famous fossil Lucy scanned at the University of Texas at Austin
6. Origin of claws seen in 390-million-year-old fossil
7. Worlds largest snake discovered in fossilized rainforest
8. Early whales gave birth on land, fossil find reveals
9. Dinosaur fossils fit perfectly into the evolutionary tree of life
10. Hobbit fossils represent a new species, concludes University of Minnesota anthropologist
11. Bacterial biofilms as fossil makers
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Fossil evidence of missing link in the origin of seals, sea lions, walruses found in Canadian Arctic
(Date:7/10/2014)... in New Mexico, nearly every public golf course is ... potable water supplies. Across the U.S. Southwest as a ... treated effluent. Reusing the effluent increases the sustainability of ... alike fertilize their lawns during the growing season. The ... State University turfgrass expert has a new vision for ...
(Date:7/10/2014)... NEW YORK , June 27, 2014 /PRNewswire/ ... against Provectus Biopharmaceuticals, Inc. ("Provectus" or the "Company")(NYSE-MKT: ... action, filed in United States District Court, Middle ... Division, is on behalf of a class consisting ... otherwise acquired Provectus securities between December 17, 2013 ...
(Date:7/10/2014)... CORAL SPRINGS, Florida , July 1, 2014 ... smart wallets pave way for convenience and improved security: NXT-ID, ... Google Inc. (NASDAQ: GOOG ), Apple Inc. (NASDAQ: ... ) and MasterCard Corporation (NYSE: MA) NXT-ID, Inc., (OTCQB: ... market, is pleased to announce that the second series of ...
Breaking Biology News(10 mins):'Tailored' water -- the latest in lawn care 2SHAREHOLDER ALERT: Pomerantz Law Firm Announces the Filing of a Class Action against Provectus Biopharmaceuticals, Inc. and Certain Officers - PVCT 2SHAREHOLDER ALERT: Pomerantz Law Firm Announces the Filing of a Class Action against Provectus Biopharmaceuticals, Inc. and Certain Officers - PVCT 3Advantages for Digital Wallets Eliminate Need to Carry Credit Cards - Large Scale CNBC Ad Campaign for Latest Smart Wallet to Commence July 7th 2Advantages for Digital Wallets Eliminate Need to Carry Credit Cards - Large Scale CNBC Ad Campaign for Latest Smart Wallet to Commence July 7th 3Advantages for Digital Wallets Eliminate Need to Carry Credit Cards - Large Scale CNBC Ad Campaign for Latest Smart Wallet to Commence July 7th 4Advantages for Digital Wallets Eliminate Need to Carry Credit Cards - Large Scale CNBC Ad Campaign for Latest Smart Wallet to Commence July 7th 5
... of the Alps, the Andes and the Himalayas in size ... hidden under the world,s oceans. Now in a special issue ... life on these submerged mountain ranges and reveal why these ... bathymetry of our oceans is now resolved at a scale ...
... ARBOR, Mich. -- Physician,s confidence in their abilities to counsel ... to their own personal habits, according to a study by ... depended on a doctor,s own exercise time, being overweight, and ... about diet and exercise. The study, published online ahead ...
... at Huntsman Cancer Institute (HCI) at the University of Utah ... maintenance and repair of the cell,s cytoskeleton, or internal framework, ... The research has implications for cancer, as well as other ... disease. The research was published in the Sep. 14, 2010, ...
Cached Biology News:Marine scientists unveil the mystery of life on undersea mountains 2Doctor's health habits affect patient counseling 2Study offers first explanation of how cells rapidly repair and maintain structure 2
(Date:7/12/2014)... Albany, New York (PRWEB) July 12, 2014 ... market analysis for various reagents used in ... biotechnology is driving the life science reagents ... this study include manufacturers and providers of ... Science Reagents Market Report: http://www.transparencymarketresearch.com/life-sciences-reagents-analytical-reagents.html . ...
(Date:7/11/2014)... , July 11, 2014 , Not ... in, into or from any jurisdiction where to do so ... jurisdiction.  Shire plc ("Shire" or the "Company") (LSE: ... this afternoon.  Shire confirms it has held a meeting with ... by Shire without the prior agreement or approval of AbbVie. ...
(Date:7/11/2014)... 11, 2014 BCC Research ( http://www.bccresearch.com ... POLYMERASE CHAIN REACTION (PCR) TECHNOLOGY: GLOBAL MARKETS , the ... reached nearly $140 billion in 2013. This is estimated ... five-year compound annual growth rate (CAGR) of 28.6%. , ... interesting and exciting possibilities within the broader PCR field. ...
(Date:7/11/2014)... - Sunovion Pharmaceuticals Canada Inc. (Sunovion) today announced that ... use as a once-daily adjunctive therapy for the treatment ... not satisfactorily controlled with conventional therapy.  APTIOM TM ... years of age. Epilepsy is one ... Epilepsy Canada, it affects 0.6% of the population and ...
Breaking Biology Technology:Transparency Market Research: Life Science Reagents Market- PCR Reagent Kits, Cell and Tissue Culture, Flow Cytometry, Electrophoresis and Chromatography 2Transparency Market Research: Life Science Reagents Market- PCR Reagent Kits, Cell and Tissue Culture, Flow Cytometry, Electrophoresis and Chromatography 3Shire plc - Statement re: Media Speculation 2Global Market for Digital Polymerase Chain Reaction Technology to Reach $490 Billion by 2018; Equipment Sector Accounts for the Fastest Growing Segment With 33% CAGR 2Global Market for Digital Polymerase Chain Reaction Technology to Reach $490 Billion by 2018; Equipment Sector Accounts for the Fastest Growing Segment With 33% CAGR 3Sunovion Pharmaceuticals Canada Inc. Announces Health Canada Approval of APTIOM(TM) (eslicarbazepine acetate) as a Once-Daily Adjunctive Treatment for Partial-Onset Seizures in Patients with Epilepsy 2Sunovion Pharmaceuticals Canada Inc. Announces Health Canada Approval of APTIOM(TM) (eslicarbazepine acetate) as a Once-Daily Adjunctive Treatment for Partial-Onset Seizures in Patients with Epilepsy 3Sunovion Pharmaceuticals Canada Inc. Announces Health Canada Approval of APTIOM(TM) (eslicarbazepine acetate) as a Once-Daily Adjunctive Treatment for Partial-Onset Seizures in Patients with Epilepsy 4
... 2 /PRNewswire-FirstCall/ - Oncolytics Biotech Inc. (TSX: ONC, NASDAQ: ... has been completed in the Phase II component of ... paclitaxel/carboplatin for patients with advanced cancers. The principal investigators ... Institute of Cancer Research, London, England, and Dr. Geoff ...
... statistical analysis technique that identifies and removes systematic ... could lead to more precise and reliable measurement ... industrial applications. Known as sequential profile adjustment ... the amount of experimental data required to make ...
... SHANGHAI, July 1 /PRNewswire-Asia/ -- WuXi PharmaTech ... had received an award from BASF for,excellent service and outstanding ... ingredients. , (Logo: http://www.newscom.com/cgi-bin/prnh/20040705/CNM002LOGO ... for a good CRO collaboration partner for years, and,today I ...
Cached Biology Technology:Oncolytics Biotech(R) Inc. Completes Patient Enrolment in U.K. Combination REOLYSIN(R) and Paclitaxel/Carboplatin Head and Neck Cancer Trial 2New statistical technique improves precision of nanotechnology data 2New statistical technique improves precision of nanotechnology data 3New statistical technique improves precision of nanotechnology data 4WuXi PharmaTech Receives Award from BASF 2
...
Mouse polyclonal antibody to PRDM2 - PR domain containing 2, with ZNF domain...
Anti Human S14G-Humanin Polyclonal Antibody...
... LABTrack provides a familiar interface for ... and warehousing. The transition from paper ... transparent. LABTrack contains an integrated ... and rules mechanism. These functions allow ...
Biology Products: