Navigation Links
Earliest animals lived in a lake environment, research shows
Date:7/27/2009

"http://www.gps.caltech.edu/people/tbristow/profile">Tom Bristow, who worked in Kennedy's lab. "In rocks of this age, smectite is normally transformed into other types of clay. The smectite in these South China rocks, however, underwent no such transformation and have a special chemistry that, for the smectite to form, requires specific conditions in the water conditions commonly found in salty, alkaline lakes."

The researchers' work involved collecting hundreds of rock samples from several localities in South China, carrying out mineralogical analysis using X-ray diffraction, and collecting and analyzing other types of geochemical data.

"All our analyses show that the rocks' minerals and geochemistry are not compatible with deposition in seawater," Bristow said. "Moreover, we found smectite in only some locations in South China, and not uniformly as one would expect for marine deposits. This was an important indicator that the rocks hosting the fossils were not marine in origin. Taken together, several lines of evidence indicated to us that these early animals lived in a lake environment."

Bristow noted that the new research gives scientists a glimpse into where some of the early animals lived and what the environmental conditions were like for them important information for addressing the broader questions of how and why animals appeared when they did.

"It is most unexpected that these first fossils do not come from marine sediments," Kennedy said. "It is possible, too, that similarly aged or older organisms also existed in marine environments and we have not found them. But at the very least our work shows that the range of early animal habitats was far more expansive than presently assumed and raises the exciting possibility that animal evolution first occurred in lakes and is tied to some environmental aspect unique to lake environments. Furthermore, because lakes are of limited size and not connected to each other,
'/>"/>

Contact: Iqbal Pittalwala
iqbal@ucr.edu
951-827-6050
University of California - Riverside
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. The life histories of the earliest land animals
2. New research reveals the earliest evidence for corn in the New World
3. Researchers find the earliest evidence of domesticated maize
4. Evidence of earliest known domestic horses found in Kazakhstan
5. Engineering technology pinpoints earliest signs of animal life
6. Earliest animal footprints ever found -- discovered in Nevada
7. Researchers devise means to create blood by identifying earliest stem cells
8. More acidic ocean could spell trouble for marine lifes earliest stages
9. Scientists confirm that parts of earliest genetic material may have come from the stars
10. Warmer environment means shorter lives for cold-blooded animals
11. Researchers shed light on trading behavior in animals -- and humans
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Earliest animals lived in a lake environment, research shows
(Date:9/11/2014)... DDT, American peregrine falcons ( Falco peregrines anatum ) ... stop rearing young birds in captivity and placing them ... models that year in ESA,s journal Ecological ... in California, with and without direct human intervention in ... would continue to recover without captive rearing, though the ...
(Date:9/11/2014)... 2014)Scientists today unveiled what appears to be the first ... New fossils of the massive Cretaceous-era predator reveal it ... years ago, providing the most compelling evidence to date ... an aquatic environment. The fossils also indicate that ... roam the Earth, measuring more than 9 feet longer ...
(Date:9/11/2014)... ago, a sudden, catastrophic event plunged much of the ... drought. This drastic climate changethe Younger Dryascoincided with the ... and the mastodon, and resulted in major declines in ... culture. , With limited evidence, several rival theories have ... such as a collapse of the North American ice ...
Breaking Biology News(10 mins):Volunteer 'eyes on the skies' track peregrine falcon recovery in California 2Volunteer 'eyes on the skies' track peregrine falcon recovery in California 3Volunteer 'eyes on the skies' track peregrine falcon recovery in California 4Volunteer 'eyes on the skies' track peregrine falcon recovery in California 5Scientists report first semiaquatic dinosaur, Spinosaurus 2Scientists report first semiaquatic dinosaur, Spinosaurus 3Scientists report first semiaquatic dinosaur, Spinosaurus 4Microscopic diamonds suggest cosmic impact responsible for major period of climate change 2
... A large collaborative study has added to the ... a person will be. The research, published by Cell ... of Human Genetics , identifies uncommon and previously unknown ... the genetic architecture of other complex traits. Although ...
... Most agricultural crops require large quantities of ... for growers is finding ways to balance the ... potentially harmful nitrates that can leach into ground ... "low-input" approaches is challenging researchers to identify genotypes ...
... traditionally relied heavily on hand thinning, a necessary but ... costs and a limited workforce, peach and other stone ... string thinners to minimize the need for hand thinning. ... when it was evaluated in four U.S. growing regions; ...
Cached Biology News:Large-scale analysis identifies new genetic alterations associated with height 2Improving nitrogen use efficiency lessens environmental impact 2Hybrid string blossom thinner tested in peach orchards 2
(Date:9/11/2014)... DuPont Tate & Lyle Bio ... it has appointed Skidmore Sales & Distributing ... Essex Grain Products and Processor’s ... in the food and beverage markets. The ... mid-western states: Alabama, Arkansas, Connecticut, Delaware, Florida, ...
(Date:9/11/2014)... LONDON , Sept. 11, 2014 ... (CRT), the charity,s development and commercialisation arm, have reached ... biotechnology company in the emerging field of regenerative ... AST-VAC2 into clinical trials in subjects with non-small ... tenth treatment to enter Cancer Research UK,s Clinical ...
(Date:9/11/2014)... The Stem Cell Institute, located in ... umbilical cord stem cell therapy on Saturday, September 20, 2014 ... Resort from 1:00 pm to 4:00 pm. , Stem ... – “Umbilical Cord Stem Cell Clinical Trials for MS and ... founder of the Stem Cell Institute and Medistem Panama Inc. ...
(Date:9/10/2014)... Brunswick, New Jersey (PRWEB) September 11, 2014 ... will host its annual Innovations in Dermatological Sciences ... meeting will focus on how the university, industry ... dermatological research into clinical use. , This conference ... had experience with cross-sector collaboration, to share their ...
Breaking Biology Technology:DuPont Tate & Lyle Bio Products Appoints Skidmore Sales as Distributor for Zemea® USP 2DuPont Tate & Lyle Bio Products Appoints Skidmore Sales as Distributor for Zemea® USP 3Cancer Research UK, Cancer Research Technology And Asterias Biotherapeutics Partner To Trial Immunotherapy Vaccine For Lung Cancer 2Cancer Research UK, Cancer Research Technology And Asterias Biotherapeutics Partner To Trial Immunotherapy Vaccine For Lung Cancer 3Cancer Research UK, Cancer Research Technology And Asterias Biotherapeutics Partner To Trial Immunotherapy Vaccine For Lung Cancer 4Cancer Research UK, Cancer Research Technology And Asterias Biotherapeutics Partner To Trial Immunotherapy Vaccine For Lung Cancer 5Cancer Research UK, Cancer Research Technology And Asterias Biotherapeutics Partner To Trial Immunotherapy Vaccine For Lung Cancer 6Cancer Research UK, Cancer Research Technology And Asterias Biotherapeutics Partner To Trial Immunotherapy Vaccine For Lung Cancer 7Cancer Research UK, Cancer Research Technology And Asterias Biotherapeutics Partner To Trial Immunotherapy Vaccine For Lung Cancer 8Stem Cell Institute Public Seminar on Adult Stem Cell Therapy Clinical Trials in San Antonio, Texas September 20th, 2014 2Stem Cell Institute Public Seminar on Adult Stem Cell Therapy Clinical Trials in San Antonio, Texas September 20th, 2014 3Stem Cell Institute Public Seminar on Adult Stem Cell Therapy Clinical Trials in San Antonio, Texas September 20th, 2014 4Innovations in Dermatological Sciences 2014 2Innovations in Dermatological Sciences 2014 3
... N.J., March 26 Vicus Therapeutics, LLC, ... Rao, Vice President Clinical Research and Development, ... 15th International,Molecular Medicine Tri-Conference on March 28st ... Convention Center in San Francisco. Dr. Rao ...
... JOLLA, Calif., March 26 TorreyPines,Therapeutics, Inc. (Nasdaq: ... and year ended December 31, 2007. For the full ... a net loss of $23.4 million.,Cash and cash equivalents ... made meaningful progress in our three clinical development programs,in ...
... 26 Pharsight,Corporation (Nasdaq: PHST ), a leading ... clinical drug,development announced today that it will be presenting ... Conference on April 2, 2008 at the Palms Las,Vegas. ... Vice President and CFO, will be presenting on April ...
Cached Biology Technology:TorreyPines Therapeutics Reports Fourth Quarter and Full Year 2007 Financial Results and Highlights 2TorreyPines Therapeutics Reports Fourth Quarter and Full Year 2007 Financial Results and Highlights 3TorreyPines Therapeutics Reports Fourth Quarter and Full Year 2007 Financial Results and Highlights 4TorreyPines Therapeutics Reports Fourth Quarter and Full Year 2007 Financial Results and Highlights 5TorreyPines Therapeutics Reports Fourth Quarter and Full Year 2007 Financial Results and Highlights 6TorreyPines Therapeutics Reports Fourth Quarter and Full Year 2007 Financial Results and Highlights 7Pharsight to Present at B. Riley & Co. 9th Annual Las Vegas Investor Conference 2
Goat anti-VAV2 Class: Antibody Product Group: Miscellaneous Antibody...
Indoleamine 2,3-dioxygenase [IDO]...
Request Info...
Pancreatic Cell Cryopreservation Medium (2X) is intended for the cryopreservation of LT2 Immortalized Pancreatic Mesenchymal Cells (SCR013) and VIT1 Primary Pancreatic Mesenchymal Cells (SCR014)....
Biology Products: