Navigation Links
Possible discovery of earliest animal life pushes back fossil record
Date:8/17/2010

In findings that push back the clock on the scientific world's thinking about when animal life appeared on Earth, Princeton scientists may have discovered the oldest fossils of animal bodies, suggesting that primitive sponge-like creatures were living in ocean reefs about 650 million years ago. The shelly fossils, found beneath a 635 million-year-old glacial deposit in South Australia, represent the earliest evidence of animal body forms in the current fossil record by at least 70 million years.

Previously, the oldest known fossils of hard-bodied animals were from two reef-dwelling organisms that lived about 550 million years ago -- Namacalathus, discovered in 2000 by John Grotzinger's group at the Massachusetts Institute of Technology, and Cloudina, first found in 1972 by Gerard Germs of the University of Cape Town, South Africa. Additionally, there are controversial fossils of soft-bodied animals that date to the latter part of the Ediacaran period between 577 and 542 million years ago. These fossils were first observed in the 1940s by Australian geologist Reginald Sprigg, and the oldest evidence to date of undisputed Ediacaran animals -- organisms called Kimberella -- was found in sediment about 555 million years old in Australia and Russia.

Princeton geosciences professor Adam Maloof and graduate student Catherine Rose happened upon the new fossils while working on a project focused on the severe ice age that marked the end of the Cryogenian period 635 million years ago. Their findings, published in the Aug. 17 issue of the journal Nature Geosciences, provide the first direct evidence that animal life existed before -- and probably survived -- the severe "snowball Earth" event known as the Marinoan glaciation that left much of the globe covered in ice at the end of the Cryogenian.

"We were accustomed to finding rocks with embedded mud chips, and at first this is what we thought we were seeing," Maloof said. "But t
'/>"/>

Contact: Kitta MacPherson
kittamac@princeton.edu
609-258-5729
Princeton University
Source:Eurekalert  

Page: 1 2 3 4

Related biology news :

1. Discovery of possible earliest animal life pushes back fossil record
2. Scripps Research scientists uncover possible cocaine addiction trigger
3. Scientists target possible cause of 1 form of bowel disease
4. Conference bursaries make malaria mission possible
5. A possible role for Smurf1 in pulmonary arterial hypertension
6. Sustainable fishing is possible and necessary
7. Faster Salmonella detection now possible with new technique
8. Nature essay made possible by Forest Service program, is Orion Magazine selection
9. Study examines family lineage of King Tut, his possible cause of death
10. JDRF-funded research advances potential for regeneration as a possible cure for type 1 diabetes
11. New study: Human running speeds of 35 to 40 mph may be biologically possible
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Possible discovery of earliest animal life pushes back fossil record
(Date:7/11/2014)... were many fires burning in eastern New South Wales, ... 11. , At 03:35 UTC on July 11 (12:35 ... Aqua passed over eastern New South Wales (NSW), the ... visible image of the region and spotted smoke (light ... MODIS,s thermal bands, are outlined in red. , The ...
(Date:7/11/2014)... Cell scientists have set a "mouse TRAP" to capture ... a recent study published in the Journal of ... a technique called TRAP to extract cellular and genetic ... by scientists at the Rockefeller Institute for Medical Research ... the protein-making machinery, or ribosomes, of the cell type ...
(Date:7/11/2014)... from the Max Planck Institute for Medical Research in ... understanding photosynthesis, the process by which the Earth first ... and which is therefore crucial for all higher forms ... the first direct visualization of a crucial event in ... specific protein complex, photosystem II, splits water into hydrogen ...
Breaking Biology News(10 mins):A first direct glimpse of photosynthesis in action 2
... a pickle People taking care of more ... parents -- engaged in fewer healthy behaviors, found a ... University. As the U.S. population continues to age, more ... the research team to conclude that "encouraging healthy behaviors ...
... Researchers from the John Innes Centre in Norwich, Great ... the FLORA project, have obtained genetically modified tomatoes rich ... class of flavonoids. These tomatoes, added to the diet ... extending the mice lifespan. The research has been published ...
... snapdragon in tomatoes to grow purple tomatoes high ... pigments found at particularly high levels in berries ... investigating ways to increase the levels of health-promoting ... "Most people do not eat 5 portions ...
Cached Biology News:Indiana University research at American Public Health Association meeting 2Indiana University research at American Public Health Association meeting 3Indiana University research at American Public Health Association meeting 4Indiana University research at American Public Health Association meeting 5Purple tomatoes: The richness of antioxidants against tumors 2Purple tomatoes: The richness of antioxidants against tumors 3Fried purple tomatoes 2
(Date:7/10/2014)... (PRWEB) July 10, 2014 Product ... in very low abundance and are often “lost ... and time-consuming. , Join presenters Dr. Rowel Tobias, ... Dr. John Anders, Head of Quality at Nanotherapeutics, ... approach that can speed detection and quantitation while ...
(Date:7/10/2014)... 10, 2014 Unraveling life’s mysteries can ... The Archer Family purchased a DNA test ... ended up with a lifetime of memories, sharing, and ... family members’ DNA genuinely brought the family closer together. ... deeper into genetic history and prior to taking the ...
(Date:7/10/2014)... Senior supply chain management executives from over 50 ... of “Reducing Cost, Lead Time, & Defects in the ... the partnership of the Bio Supply Management Alliance ( ... SCMI) of the University of San Diego in ... Institute of Peace and Justice in San Diego, Devendra ...
(Date:7/10/2014)... PROVO, Utah , July 10, 2014 ... genome annotation and interpretation, today announced an ... sequencing (NGS) analytics for Lineagen,s NextStep Dx ... evaluation of neurodevelopmental and neurological disorders, currently ... chromosomal microarray (CMA) testing service used by ...
Breaking Biology Technology:Novel Ms Techniques Speed Detection of Biopharmaceutical Product and Process Impurities, New Webinar Hosted by Xtalks 2Ancestry DNA Test Reveals a Controversial and Undiscovered Family History 2Ancestry DNA Test Reveals a Controversial and Undiscovered Family History 3Ancestry DNA Test Reveals a Controversial and Undiscovered Family History 4Ancestry DNA Test Reveals a Controversial and Undiscovered Family History 5Biotech & Biopharm Supply Chain Management Executives Launch BSMA in San Diego 2Biotech & Biopharm Supply Chain Management Executives Launch BSMA in San Diego 3Biotech & Biopharm Supply Chain Management Executives Launch BSMA in San Diego 4Tute Genomics Platform Selected to Provide Clinical Interpretation for Lineagen's NextStepDx PLUS Next-Generation Sequencing-Based Diagnostic Test 2Tute Genomics Platform Selected to Provide Clinical Interpretation for Lineagen's NextStepDx PLUS Next-Generation Sequencing-Based Diagnostic Test 3Tute Genomics Platform Selected to Provide Clinical Interpretation for Lineagen's NextStepDx PLUS Next-Generation Sequencing-Based Diagnostic Test 4
... The ... available leg-room, energy efficient impellers, and new service-friendly control panel, the Allergard is an ... ... Animal Transfer Station (ATS) from NuAire is ergonomic, portable, and energy efficient. Lightweight design ...
... ... easier to learn about the oldest buildings on earth and a “fascinatingly weird” ancient culture. ... (PRWEB) June 11, ... on its website to provide a simple introduction to megalithic architects in Frequently Asked Question ...
... ... in clinical research, key issues around open source technology are highlighted at leading industry events. ... Washington, DC (PRWEB) June ... meeting of the Drug Information Association (DIA). The DIA Annual Meeting is the ...
Cached Biology Technology:The Allergard 619: an All-new Animal Transfer Station from NuAire 2New tool for exploring the ancient world. 2Open Source Clinical Trials Software Featured at the 46th DIA Annual Meeting 2Open Source Clinical Trials Software Featured at the 46th DIA Annual Meeting 3
...
DNA fragmentation factor & Inhibitor of CAD...
Component in MasterPure™ Purification Kits...
Anti-gp340 Monoclonal Antibody Description: 100 g Research Focus: cancer & cell proliferation Storage: -20C Shipping Temperature: 4C...
Biology Products: