Navigation Links
New study shows how giant tortoises, alligators thrived in High Arctic 50 million years ago
Date:8/24/2010

a, Berkeley. The National Science Foundation funded the study.

"This is arguably the most comprehensive data set for the early Eocene High Arctic, and certainly explains how alligators and giant tortoises could live on Ellesmere Island some 52 to 53 million years ago," said Eberle, who also is the curator of fossil vertebrates at the University of Colorado Museum of Natural History.

During the Eocene, Ellesmere Island -- which is adjacent to Greenland -- probably was similar to swampy cypress forests in the southeastern United States today, said Eberle. Eocene fossil evidence collected there in recent decades by various teams indicate the lush landscape hosted giant tortoises, aquatic turtles, large snakes, alligators, flying lemurs, tapirs, and hippo-like and rhino-like mammals.

The bone and tooth enamel of vertebrate fossils contains biogenic apatite -- a mineral that is fossilized after the death of living organisms and which can be used as a "flight recorder" to infer paleoclimate conditions. Since all of the fossil materials were from the same stratigraphic layer and locality, the oxygen isotope ratios from the animals are linked to the temperatures of both ingested river water and precipitation at the time, allowing them to better estimate temperatures in the Eocene both annually and seasonally, she said.

"We use the water that the animals were drinking as a proxy for paleotemperature," said Eberle. "In mammal fossils, for example, we can analyze the oxygen isotope ratios in a sequence along the length of a large fossil tooth and estimate the warm-month and cold-month averages during the Eocene because teeth grow year round. When it comes to oxygen isotope values in tooth enamel, what we found for these creatures is that you are what you drink," she said.

The team looked at teeth from a large, hippo-like mammal known as Coryphodon, as well as bones from bowfin fish and shells and bones from aquatic turtles fro
'/>"/>

Contact: Jaelyn Eberle
jaelyn.eberle@colorado.edu
303-492-8069
University of Colorado at Boulder
Source:Eurekalert  

Page: 1 2 3 4

Related biology news :

1. Long-term study shows effect of climate change on animal diversity
2. £2 million study to reveal workings of dementia genes
3. New study looks to define evangelicals and how they affect polling
4. CU-Boulder study suggests air quality regulations miss key pollutants
5. Researchers study acoustic communication in deep-sea fish
6. Study reveals homeowner perceptions in fire-prone areas
7. Researchers study how pistachios may improve heart health
8. Study: urban black bears live fast, die young
9. New study indicates link between weight gains during pregnancy and dieting history
10. Study reveals specific gene in adolescent men with delinquent peers
11. Sweat it out: UH study examines ability of sweat patches to monitor bone loss
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
New study shows how giant tortoises, alligators thrived in High Arctic 50 million years ago
(Date:10/14/2014)... how to produce enough food to feed the world ... Organization of the United Nations predicts that food production ... feed a growing global population, and plants are one ... Plants—grains, cereals, fruits, vegetables, and more—feed humans directly ... tap into our knowledge of how plants work to ...
(Date:10/14/2014)... doses of fish oil supplements, rich in omega-3 fatty acids, ... heartbeat in which the heart can beat as fast as ... led by the Montreal Heart Institute were published in the ... October 7th. , For the trial, 337 patients with atrial ... 4 grams of fish oil a day or to placebo ...
(Date:10/14/2014)... WORCESTER, MA – A team of scientists led ... School (UMMS) and the University of Miami Miller ... likely a key genetic pathway underlying bipolar (manic ... better drugs for treating bipolar affective disorder, as ... , The new findings, published online this week ...
Breaking Biology News(10 mins):Building a bridge from basic botany to applied agriculture 2Building a bridge from basic botany to applied agriculture 3Rare genetic disease protects against bipolar disorder 2Rare genetic disease protects against bipolar disorder 3
... The Nature Conservancy and Conservation International (CI) have joined ... in one of the largest debt-for-nature swaps in history. ... Ricas most critically threatened tropical forests, with the United ... Costa Rica spending that amount on tropical forest conservation ...
... of Warwick and Astra Zeneca have found a new way ... hydrogen atoms and thus spot unwanted polymorphs in pharmaceuticals. ... which an active drug can actually exist in more than ... to act in very different ways. Now researchers at the ...
... important regulator of blood glucose levels, now has a ... University Medical Center researchers, working with colleagues in Texas, ... systems, which are involved in drug addiction and many ... targets for treating drug abuse, the findings raise questions ...
Cached Biology News:Costa Rica, US announce historic debt-for-nature swap 2Costa Rica, US announce historic debt-for-nature swap 3NMR researchers unlock hydrogen's secrets to spot polymorphism in pharmaceuticals 2Insulin's brain impact links drugs and diabetes 2Insulin's brain impact links drugs and diabetes 3
(Date:10/19/2014)... 19, 2014 The Asia-Pacific Speech Analytics ... in Asia-Pacific with analysis and forecast of revenue. This ... 2014 to $208 million by 2019, at a Compound ... 2019. , Browse through the TOC of the Asia-Pacific ... the in-depth analysis provided. It also provides a glimpse ...
(Date:10/19/2014)... According to market research report “Outdoor Wi-Fi Market ... Global Advancements, Forecasts and Analysis (2013 - 2018)", ... with analysis and forecasting of the global revenues. ... and the restrains for this market with the ... Browse 65 market data tables and 69 figures ...
(Date:10/18/2014)... The Asian arthroscopic devices report defines and ... forecast of revenue. The arthroscopic devices market in Asia ... at a CAGR of 6.5% from 2013 to 2018. ... devices market, to get an idea of the in-depth ... segmentation of arthroscopic devices market in the same region, ...
(Date:10/18/2014)... The Biomass Power industry has ... to 2014. The industry's expansion has been propelled in ... encouraged the use of biomass power. Furthermore, the majority ... require local utilities to generate electricity from renewable power ... campaigning for green technology also influenced industry performance by ...
Breaking Biology Technology:The Asia-Pacific Speech Analytics market is estimated to reach $208 million by 2019 - New Report by MicroMarket Monitor 2The Asia-Pacific Speech Analytics market is estimated to reach $208 million by 2019 - New Report by MicroMarket Monitor 3The Asia-Pacific Speech Analytics market is estimated to reach $208 million by 2019 - New Report by MicroMarket Monitor 4Outdoor 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 4The Asian arthroscopic devices market is estimated to grow to $712.3 million by 2018 - New Report by MicroMarket Monitor 2The Asian arthroscopic devices market is estimated to grow to $712.3 million by 2018 - New Report by MicroMarket Monitor 3The Asian arthroscopic devices market is estimated to grow to $712.3 million by 2018 - New Report by MicroMarket Monitor 4Biomass Power in the US Industry Market Research Report from IBISWorld Has Been Updated 2Biomass Power in the US Industry Market Research Report from IBISWorld Has Been Updated 3
... Massachusetts Governor Mitt Romney has drawn a thoughtful ethical line ... stem cell research in his state and to oppose another. ... news coverage of his announcement, it could define a more ... , ,In fact, if Romney's position became law in Wisconsin ...
... visualize thought? , ,Well, by pressing the open tip of ... hair against the membrane of an individual brain cell, ... flowing through individual ion channels on a cell's membrane. This ... a peek at the electrical activity of individual cells. , ...
... the DEMO conference last week in Scottsdale. Many of the ... 15 years have been introduced at this confab, which celebrated ... more than 250 million readers, listeners and viewers worldwide. , ... we can look at the state of the industry," said ...
Cached Biology Technology:Massachusetts stem-cell plan reflects status quo for Wisconsin research 2Massachusetts stem-cell plan reflects status quo for Wisconsin research 3Prairie Technologies works with UW engineer to visualize the brain 2In search of the next big thing at DEMO 2In search of the next big thing at DEMO 3
MitoScreen (JC-1) Kit , 100 tests Consult technical datasheet for details....
Conjugate Quality Control Evaluation Specificity: Conjugate Quality Control Evaluation ...
... Production Service - Conjugation ... Biotin Conjugation Fluorescein Isothiocyanate Conjugation ... Allophycocyanin Conjugation Alexa Fluor 488 ... Alexa Fluor 405 Conjugation Rpe-Alexa Fluor ...
Request Info...
Biology Products: