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:12/10/2014)... N.C. , Dec. 9, 2014  Wake Forest Baptist ... education building for its School of Medicine. Funding for ... larger capital campaign that will be publicly launched next ... be located in the former 60 series R.J. Reynolds ... Innovation Quarter. Construction will begin immediately with plans to ...
(Date:12/5/2014)... PROVO, Utah , Dec. 4, 2014  Tute ... has raised $2.3 million in Series A1 funding led ... angel investors also participated in the investment round. ... as the healthcare community adopts next-generation sequencing and seeks ... disease," said Reid Robison , MD MBA, and ...
(Date:11/21/2014)... , Nov. 19, 2014  Earlier this year ... York College, and one of the most prolific inventors ... that are transmitted from Smartphones to third party agencies. ... and has one of the earliest known patents in ... usage in the military, child care, elder care and ...
Breaking Biology News(10 mins):Wake Forest Baptist to Build New Medical Education Facility In Wake Forest Innovation Quarter 2Wake Forest Baptist to Build New Medical Education Facility In Wake Forest Innovation Quarter 3Wake Forest Baptist to Build New Medical Education Facility In Wake Forest Innovation Quarter 4Tute Genomics Raises $2.3 Million to Scale Up Cloud-Based Genome Analytics and Accelerate Personalized Medicine 2Tute Genomics Raises $2.3 Million to Scale Up Cloud-Based Genome Analytics and Accelerate Personalized Medicine 3Patented Biosensor Wearable Technology Provides a More Civilized Method of Quarantine 2Patented Biosensor Wearable Technology Provides a More Civilized Method of Quarantine 3Patented Biosensor Wearable Technology Provides a More Civilized Method of Quarantine 4
... competing demands on a mother,s physiology: Her body wants to produce ... own health. Some of the genes that she passes on to ... demands from her child. These so-called "imprinted genes" inherited from the ... is to get as many resources for the fetus as possible. ...
... People aren,t the only living things that suffer from ... from a lack of water or too much water, from ... climate. Helping trees and crops adapt to stress quickly and ... Now research led by Michigan Technological University scientists has identified ...
... disparities among women, socioeconomic status and social context may ... by researchers at the Johns Hopkins Bloomberg School of ... authors examined race disparities in obesity among black and ... similar income and compared these estimates to national data. ...
Cached Biology News:Gender-specific disease risks start in the womb 2Gender-specific disease risks start in the womb 3Feeling stressed? So is the poplar 2Social context may be a better indicator of obesity disparities than race 2
(Date:12/19/2014)... Calif. , Dec. 19, 2014 Bina Technologies, ... USA) announced today that they have been acquired by ... is a privately held company that provides a ... next generation sequencing (NGS) data for the academic and ... Roche Sequencing Unit, and will continue to focus on ...
(Date:12/19/2014)... Springs, FL (PRWEB) December 18, 2014 ... of the nation’s leading specialty pharmacies, has an ... serve as clinical pharmacy consultants for prescriber offices ... therapy expertise. , “We have a variety ... therapies. For example, those specializing in hepatitis C ...
(Date:12/19/2014)... December 18, 2014 Ed Bilsky, Ph.D., ... the Center for Excellence in the Neurosciences (CEN), and ... has been selected as a member of the prestigious ... first neuroscientist from Maine to receive this honor. , ... supported entirely by the Dana Foundation. Its mission ...
(Date:12/19/2014)... December 19, 2014 In contrast to ... LEDs with various colors, Valoya uses proprietary LED technology ... offers best possible uniformity which is critical in low ... high spectral accuracy throughout its lifetime which is up ... tubes. , "The investment cost was clearly higher ...
Breaking Biology Technology:Bina Technologies is acquired by Roche. 2Bina Technologies is acquired by Roche. 3BioPlus Specialty Pharmacy Expands ‘Regional Pharmaceutical Care Liaison’ Team 2BioPlus Specialty Pharmacy Expands ‘Regional Pharmaceutical Care Liaison’ Team 3UNE's Ed Bilsky Named Member of Dana Alliance for Brain Initiatives 2UNE's Ed Bilsky Named Member of Dana Alliance for Brain Initiatives 3
... knows networks. The University of Wisconsin-Madison professor of computer ... the early international channels of the Internet. He also has ... all about finding the right applications to harness increased computing ... D.C., where he works for the National Science Foundation ...
... at the atomic scale. Source: Imago The ... for nanotechnology research, said it has commissioned an instrument ... , ,NANO officials said they were pleased with the ... the University of Sydney. , ,Imago makes tools to ...
... First-of-year columns are ripe for prognostication and this one is ... coaster, the technology industry has been laboring up, up, up the ... will offer a bit of payback, a little joy ride. And ... a few playful loops, not the white-knuckled death plummet we have ...
Cached Biology Technology:Landweber on networks, open source, and NSF budget cuts 2Landweber on networks, open source, and NSF budget cuts 3Landweber on networks, open source, and NSF budget cuts 4Year ahead offers payoff for hard work 2Year ahead offers payoff for hard work 3
...
... Human CD66 acd Recognizes human ... neutrophils and cells in some cases ... with transfectants containing BGPa, NCA and ... Immunogen: Human ...
Request Info...
... GOAT ANTI-MOUSE IgG+IgA+IgM (H+L) ... with highly purified horseradish ... antibody has been absorbed ... fetal bovine, horse, goat, ...
Biology Products: