Navigation Links
Antarctic fossils paint a picture of a much warmer continent
Date:8/5/2008

he discovery of lake deposits with perfectly preserved fossils of mosses, diatoms and ostracods, a type of small crustacean, is particularly exciting to scientists, noted Lewis. Fossils are extremely rare in Antarctica, especially those of terrestrial and freshwater plants and animals.

"They are the first to be found even though scientific expeditions have been visiting the Dry Valleys since their discovery during the first Scott expedition in 1902-1903," said Lewis. Robert Falcon Scott was a British Antarctic explorer who perished during an attempt to the first to reach the South Pole in 1912.

For Ashworth the fossils are a scientific treasure trove.

He said he was particularly struck that some species of diatoms and mosses are indistinguishable from living creatures. Today, these species occur throughout the world, except in Antarctica.

"To be able to identify living species amongst the fossils is phenomenal. To think that modern counterparts have survived 14 million years on Earth without any significant changes in the details of their appearances is striking. It must mean that these organisms are so well-adapted to their habitats that in spite of repeated climate changes and isolation of populations for millions of years they have not become extinct but have survived" said Ashworth, the principal paleoecologist in the research.

What makes the fossils especially valuable is that their context is known following years of detailed mapping of ancient glacial deposits in the western Olympus and Asgard mountain ranges of Antarctica by Marchant and Lewis. As part of their research, they discovered volcanic ashes which have been dated at Lamont-Doherty geochronology labs by researchers Sidney Hemming and Malka Machlus, coauthors in the study.

Lewis added that the fossils are the best dated so far to come from Antarctica.

The fossil location today high in the mountains is a completely frozen landscape.


'/>"/>
Contact: Peter West
pwest@nsf.gov
703-292-7761
National Science Foundation
Source:Eurekalert  

Page: 1 2 3 4 5

Related biology news :

1. Even the Antarctic winter cannot protect Wilkins Ice Shelf
2. Scientists find 245 million-year-old burrows of land vertebrates in Antarctica
3. Explorers marvel at Brittlestar City on seamount in powerful current swirling around Antarctica
4. Unmanned aerial vehicles mark robotic first for British Antarctic Survey
5. Antarcticas coldest, darkest season draws Montana State University researchers
6. Has the mystery of the Antarctic ice sheet been solved?
7. Krill discovered living in the Antarctic abyss
8. Observing sustainable tourism in Antarctica
9. Antarctic life hung by a thread during ice ages
10. Antarctic expedition provides new insights into the role of the Southern Ocean for global climate
11. Exploration of lake hidden beneath Antarcticas ice sheet begins
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Antarctic fossils paint a picture of a much warmer continent
(Date:12/17/2014)... 16, 2014  Automation is fundamentally transforming the ... than at international borders. Over the past decade, ... allowed veteran travelers to self process through border ... Kiosks at an increasing number of airports, seaports, ... According to Maxine Most , Principal ...
(Date:12/11/2014)... --Research and Markets , ... ) has announced the addition of the ... to their offering. One major ... technology. With continuous advances in technology, it is ... standard that meets the needs and expectations of ...
(Date:12/11/2014)... N.C. , Dec. 10, 2014  That blood pressure ... quite a while. Hypertension – the medical term for high ... the early 1800s, and the inflatable cuff that,s used in ... doesn,t, however, mean there,s nothing new about hypertension, its triggers ... long-held beliefs about the condition and the best ways to ...
Breaking Biology News(10 mins):Automated Border Control (ABC) Transforms the Global Travel Experience With More Than 2500 ABC eGates and APC Kiosks Deployed In Airports, Seaports, and Land Borders Worldwide 2Biometrics Market in the APAC Region 2015-2019: Key Vendors are 3M Cogent, NEC, Safran and Suprema 2Research points to need for new approaches to treatment of high blood pressure 2Research points to need for new approaches to treatment of high blood pressure 3Research points to need for new approaches to treatment of high blood pressure 4
... crooked beady eyes peeking out of a the shell do ... murky waters of the Chesapeake Bay. They also produce important ... from an adolescent into a full-fledged adult. Scientists at the ... a new hormone in those eyestalks responsible for forming body ...
... creatures whose state of mind can usually be observed ... proposed by Dr Paul Ekman, posits there are six ... through specific facial expressions, regardless of language or culture. ... New research published in the journal Current ...
... become abundant, threaten species richness and the well-functioning of ... that attempt to restrict the expansion of non-native species ... invasions are a serious environmental problem. An example of ... world is Fallopia japonica , the ...
Cached Biology News:Hormone in crab eyes makes it possible for females to mate and care for their young 2Written all over your face: Humans express 4 basic emotions rather than 6 2Written all over your face: Humans express 4 basic emotions rather than 6 3Are invasive plants a problem in Europe? Controversial views among invasion biologists 2
(Date:12/22/2014)... , Dec. 22, 2014 /PRNewswire/ - RepliCel Life ... regenerative medicine company focused on the development of autologous ... out of the University of Calgary in conjunction with ... Carolina, which further validates the company,s ongoing clinical research ... effects of pattern baldness. The paper entitled ...
(Date:12/22/2014)... Calif. , Dec. 22, 2014  ( www.competitivehealth.com ... CoPatient, an online medical bill review and advocacy service, ... in the FREE WellCard Savings discount health services marketplace. ... bill that was more than they expected to pay. ... reduce health care costs, WellCard Savings is pleased to ...
(Date:12/22/2014)... December 22, 2014 Fertility Associates of ... Egg Bank USA , a network of more than ... this partnership, patients have fast access to a national ... fertilization, IVF . Fertility Associates of Memphis is the ... fertility treatment option. , Dr. William Kutteh , ...
(Date:12/19/2014)... December 19, 2014 BioPlus Specialty ... pharmacies, announces the promotion of Nick Maroulis, Pharm.D. to ... Pharmacy Services. , In this position, Dr. Maroulis ... also managing the directors of our multi-site pharmacies as ... since 1997 and during that time he has served ...
Breaking Biology Technology:Newly Released Peer-Reviewed Publication Further Validates RepliCel's Use of Dermal Sheath Cup Cells to Treat Pattern Baldness 2Newly Released Peer-Reviewed Publication Further Validates RepliCel's Use of Dermal Sheath Cup Cells to Treat Pattern Baldness 3Newly Released Peer-Reviewed Publication Further Validates RepliCel's Use of Dermal Sheath Cup Cells to Treat Pattern Baldness 4Newly Released Peer-Reviewed Publication Further Validates RepliCel's Use of Dermal Sheath Cup Cells to Treat Pattern Baldness 5WellCard Savings Announces CoPatient Medical Bill Review Service for Members 2Fertility Associates of Memphis Announces Partnership with Donor Egg Bank USA 2Fertility Associates of Memphis Announces Partnership with Donor Egg Bank USA 3BioPlus Specialty Pharmacy Promotes Dr. Nick Maroulis to Vice President of Specialty Pharmacy Services 2
... talent when the key skills for today's success are ... for talent in order to compete in the global ... is a misperception that there is a shortage of ... is that there are many qualified, highly skilled, technical ...
... I started this column just over four years ago, I had ... year. My interest in writing a column was to share with ... would help them with business plans, presentations, and just overall awareness ... as a biotech CEO, I quickly realized that I couldn't afford ...
... Pharmaceuticals , a privately held pharmaceutical company based in ... 2MD, its lead osteoporosis compound. , ,The study is ... bone mineral density in postmenopausal women. Osteoporosis, a disease ... in susceptibility to fractures, occurs frequently in postmenopausal women ...
Cached Biology Technology:Getting beyond the vortex of corporate mediocrity 2Getting beyond the vortex of corporate mediocrity 3Getting beyond the vortex of corporate mediocrity 4A Midwest life-science odyssey comes full circle 2A Midwest life-science odyssey comes full circle 3A Midwest life-science odyssey comes full circle 4A Midwest life-science odyssey comes full circle 5A Midwest life-science odyssey comes full circle 6A Midwest life-science odyssey comes full circle 7A Midwest life-science odyssey comes full circle 8
This CLS number is a new product number, created to easily match Cornings product number. If showing no availability yet, please order under the old Sigma-Aldrich number (E6027) or contact customer s...
A convenience pack containing one each of the most popular sizes of Cat. No. 4980 flask. Designed for the low volume user, a case contains one each of five sizes: 50mL, 125mL, 250mL, 500mL, and 1L....
... HPLC range has now been ... a quaternary low pressure mixing ... pressure mixing pump. These ... add even more versatility to ...
Mouse monoclonal antibody to QPCT - glutaminyl-peptide cyclotransferase (glutaminyl cyclase)...
Biology Products: