Navigation Links
Virginia Tech, Nanjing Institute researchers discover half-billion year-old fossils

Scientists interested in ancient life have a wealth of fossils and impressions frozen in rocks that they can study from as far back as 540 million years ago ?when animals with shells and bones began to become plentiful. But evidence of complex life older than 540 million years is scant and difficult to study.

Now, a research team from Virginia Tech in the United States and Nanjing Institute of Geology and Paleontology in China has discovered uniquely well-preserved fossils form from 550 million year old rocks of the Ediacaran Period. Shuhai Xiao, geoscientist from Virginia Tech, with Bing Shen, a Virginia Tech graduate student, and Chuanming Zhou, Guwei Xie, and Xunlai Yuan, all of the Nanjing Instititue of Geology and Paleontology, report in the Proceedings of the National Academy of Sciences (PNAS) the discovery of these unusually preserved fossils which reveal unprecedented information about the body construction of macroscopic organisms more than half billion years ago. The article has been published in the PNAS Online Early Edition the week of July 11 - 15, 2005.

Ediacara fossils, named after Ediacara Hill in the Flinders Ranges of South Australia where such fossils are best known, are some of the oldest fossils with large body size and complex morphology. "Present in rocks ranging from 575 to 540 million years in age, these fossils provide the key to understand the prelude to the Cambrian Explosion when animals with skeletons and familiar morphologies began to bloom about 540-520 million years ago," Xiao said, "However, classic Ediacara fossils are mostly preserved in sandstone, and the coarse sand grains limit how much we can learn about the fine-scale morphologies of these fossils."

Partly because of this limitation, scientists cannot agree on the fine-scale anatomy of Ediacara organisms and have been debating for decades their relationships with animals and other macroscopic life forms. Traditionally, Ediacara organisms are thought to
'"/>

Source:Virginia Tech


Page: 1 2 3

Related biology news :

1. Virginia Tech group adds tools to DNA-targeted anti-cancer drugs
2. Virginia Tech football player uses prototype cast
3. Virginia Tech scientists develop process for creating biocompatible fibers
4. Virginia Tech helping to develop higher quality, disease-resistant wheat varieties
5. Virginia Bioinformatics Institutes launches microbial database
6. Virginia Techs System X supercomputer provides super tool for simulation of cell division
7. Weizmann Institute scientists develop a new approach for directing treatment to metastasized prostate cancer in the bones.
8. Affymetrix and the Karolinska Institutet Announce Translational Medicine Strategic Alliance
9. BioMed Central welcomes the new National Institutes of Health public access policy
10. Institute for Systems Biology Symposium Addresses Need for Better Computational Tools
11. UC San Diego partners with Venter Institute to build marine microbial genomics cyberinfrastructure
Post Your Comments:
(Date:9/30/2014)... What do seedless watermelon, salmon, and strawberries all have ... have two sets of chromosomes and are diploid, these ... more sets of chromosomesseedless watermelon and salmon have 3 ... 10! While this might seem surprising, in fact ... was first discovered over a century ago, but only ...
(Date:9/30/2014)... Prenatal exposure to tetrachloroethylene (PCE) in drinking water ... abruption, according to a new study led by ... , The study, published in the journal ... 1,019 unexposed pregnancies among 1,766 women in Cape ... late 1960s to the early 1980s by the ...
(Date:9/30/2014)... involving mice and published in the October 2014 issue ... , suggests that just because you can do it, ... of Italian scientists have found that using marijuana in ... system. This damage may result in autoimmune diseases and ... disease and rheumatoid arthritis in adulthood. , "I hope ...
Breaking Biology News(10 mins):Gene doubling shapes the world: Instant speciation, biodiversity, and the root of our existence 2Gene doubling shapes the world: Instant speciation, biodiversity, and the root of our existence 3Gene doubling shapes the world: Instant speciation, biodiversity, and the root of our existence 4Contaminated water linked to pregnancy complications, BU study finds 2Adolescent exposure to thc may cause immune systems to go up in smoke 2
... a cold or flu knows, a high temperature is ... immune reaction when fighting off pathogens. Laboratory studies, in ... in detail, have shown that these responses display significant ... the maximum possible level of intensity? New immunological theories ...
... about positive and negative emotions they often use spatial metaphors. A ... person is down in the dumps. Some researchers believe these metaphors ... do we use spatial words to talk about emotional states, we ... and emotion To test this link between vertical space ...
... two license agreements with SuperPower, a wholly-owned subsidiary ... intellectual property on second generation (2G) high temperature ... Sponsored Research Agreement (SRA) previously executed between the ... by Venkat Selvamanickam, M.D. Anderson chair professor of ...
Cached Biology News:Only some like it hot 2To remember the good times, reach for the sky 2SuperPower and UH sign high temperature superconducting wire license agreements 2
(Date:9/30/2014)... Hungary , September 30, 2014 ... and intuitive browsing of chemistry in documents ... chemistry software solutions and consulting services for life ... chemical information and generate Markush structures from documents. ... an organizations intellectual property, however generating and understanding ...
(Date:9/30/2014)... Calif. , Sept. 30, 2014 FemCap ... women,s health announces its receipt of a patent No: ... menstrual cup has also received FDA clearance in the ... and the CE in Europe. This patent is related to ... with this issuance, the company is releasing FemmyCycle Teen, ...
(Date:9/30/2014)... Boston, MA (PRWEB) September 30, 2014 ... communications (UC) and collaboration company is dedicated to ... data connectivity needs. Julie Power, a ... team to ensure collaboration solutions stays connected and ... response to the increased movement of businesses to ...
(Date:9/30/2014)... September 30, 2014 Back in the 1970’s, ... square feet. per employee, which included space for circulation and ... says Jeff Howell, partner at Nidea Corporate Real Estate ... Toronto. “By the year 2000, however, 250 square feet ... that number come down to 175 to 225 square feet, ...
Breaking Biology Technology:ChemAxon Introduces ChemCurator for Chemical Information Extraction and Markush Structure Creation 2The FemmyCycle 2SoundConnect Expands Carrier Services Division 2ITRA Global Reports on How Companies Are Squeezing More Employees into Less Office Space 2ITRA Global Reports on How Companies Are Squeezing More Employees into Less Office Space 3
... 2011 AAPC ( www.aapc.com ) announced its ... again lowered prices from the previous year. Prices have been reduced ... primary purpose of a price reduction was to benefit our more ... the significant savings," said Olga Starynskaya, coding books department manager for ...
... Perceptive Informatics , the industry,s leading eClinical solutions provider ... PRXL ), today announced results of a global ... Response Adaptive Trials." The webinar, presented by Perceptive Informatics ... professionals from the biopharmaceutical industry across a broad range ...
... America, Inc . ( http://www.cordblood-america.com ) (OTC Bulletin Board: ... preservation company focused on bringing the life saving potential ... to announce that its shareholders have approved an amendment to ... The vote was approximately 80% for the stock ...
Cached Biology Technology:AAPC Lowers Prices on Medical Coding Books, Again 2Perceptive Informatics Global Survey Results Show Growing Industry Interest in Implementing Adaptive Trial Designs 2Perceptive Informatics Global Survey Results Show Growing Industry Interest in Implementing Adaptive Trial Designs 3Perceptive Informatics Global Survey Results Show Growing Industry Interest in Implementing Adaptive Trial Designs 4Perceptive Informatics Global Survey Results Show Growing Industry Interest in Implementing Adaptive Trial Designs 5Cord Blood America: Shareholders Approve Common Stock Reverse Split 2
Anti-Dynamin Monoclonal Antibody Description: 100 g Research Focus: neuroscience Storage: -20C Shipping Temperature: 4C...
Carrier-Free Recombinant Human Flt-3/Flk-2 Ligand (Flt3/Flk2 Ligand, Flt3L, Flt3-L, Flk2L, Flk2-L) 100 ug...
Anti-CD74 Monoclonal Antibody Description: 200 l Research Focus: cell surface antigens Storage: 4C Shipping Temperature: 4C...
POU domain, class 2, transcription factor 2,...
Biology Products: