Navigation Links
Worms among first animals to surface after K-T extinction event, CU-led study finds
Date:10/11/2011

A new study of sediments laid down shortly after an asteroid plowed into the Gulf of Mexico 65.5 million years ago, an event that is linked to widespread global extinctions including the demise of big dinosaurs, suggests that lowly worms may have been the first fauna to show themselves following the global catastrophe.

While the focus on the so-called K-T boundary extinction is often on the survival and proliferation of mammals, paleo-botanical studies show some of the earliest terrestrial ecosystems to emerge were dominated by low-diversity and opportunistic aquatic plants, said University of Colorado Boulder geological sciences Associate Professor Karen Chin. And while sediments laid down immediately following the impact event generally have relatively few animal fossils, new evidence from North Dakota shows networks of crisscrossing burrows less than three inches above the K-T boundary layer.

"Fossil burrows provide direct evidence of animal activity that occurred right at that spot, and these burrows are quite extensive," said Chin, who said their characteristics suggest they were probably produced by worms. "To my knowledge, such burrows haven't been documented in terrestrial environments this close to the K-T boundary. This is a glimpse of a world we don't know very much about yet."

While Chin and her colleagues are still working to understand the timing of the fossil burrows as they relate to the K-T extinction boundary, Chin said she believes that they likely were made within a few thousand years after the extinction event. Future studies should help narrow that window, said Chin, who also is curator of paleontology at the University of Colorado Museum of Natural History.

Chin gave a presentation on the new findings at the 2011 annual meeting of the Geological Society of America being held this week in Minneapolis. Co-authors on the study were A.A. Ekdale of the University of Utah and Dean Pearson of the Pi
'/>"/>

Contact: Karen Chin
karen.chin@colorado.edu
303-735-3074
University of Colorado at Boulder
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Parasitic worms: Hidden global health threat
2. Bone-munching worms from the deep sea thrive on fish bones
3. UCSF team shows how to make skinny worms fat and fat worms skinny
4. Simple marine worms distantly related to humans
5. When worms stick together and swim on thin water, what happens and why does it matter?
6. LCD projector used to control brain and muscles of tiny organisms such as worms
7. Studying illnesses caused by worms: Scientists are learning how immune cells communicate
8. Notre Dame and Wyoming scientists genetically engineer silkworms to produce artificial spider silk
9. Warrior worms discovered in snails; UCSB scientists see possible biomedical applications
10. Body builders -- the worms that point the way to understanding tissue regeneration
11. Brains, worms and computer chips have striking similarities
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Worms among first animals to surface after K-T extinction event, CU-led study finds
(Date:6/24/2015)... 2015 The biologics safety testing market is ... the market include growth of the pharmaceutical and biological ... Over the years, the number of drug approvals in ... the FDA approved 225 drug applications and Health Canada ... Europe accounted for 3,822 of the pharmaceutical ...
(Date:6/24/2015)... SAN JOSE, Calif. , June 24, 2015 ... leading developer of human interface solutions, today announced ... fingerprint sensor to provide secure authentication for its ... Having recently reached more than 200 million shipments ... shipment with Sharp reinforces Synaptics, strength, scalability and ...
(Date:6/24/2015)... 2015 Biometry authentication provider KeyLemon today ... solution one face in. Logo ... face in, entering the expanding biometric authentication market ... biometric answer to the password problem. With advanced ... with KeyLemon, one face in allows users to ...
Breaking Biology News(10 mins):Biological Safety Testing Market by Application, Product, & Test - Global Forecast to 2019 2Biological Safety Testing Market by Application, Product, & Test - Global Forecast to 2019 3Biological Safety Testing Market by Application, Product, & Test - Global Forecast to 2019 4Synaptics Brings Natural ID Technology to Sharp's Newest Flagship Smartphone 2KeyLemon Announces Partnership With Biometric Password Solution onefacein 2
... pathogens deploy effector proteins as part of their ,molecular ... New research has revealed the structure of a bacterial ... host. , Gram-negative bacterial pathogens can deliver effector proteins ... to manipulate host cell processes for the benefit of ...
... - Scientists at the U.S. Department of Energy,s Brookhaven ... mechanism plants use to limit the production of fatty ... biochemical pathways to increase the production of plant oils ... "Now that we understand how this system operates ...
... diversity is increasingly threatening Mother Nature,s ability to provide humans ... and protection from pests and disease, according to a sweeping ... of ecologists, including biologists from the University of British Columbia ... the June 7 edition of the journal Nature ...
Cached Biology News:The activity of a bacterial effector protein seen in molecular detail 2Scientists identify mechanism for regulating plant oil production 2Scientists identify mechanism for regulating plant oil production 3Loss of biodiversity increasingly threatens human well-being: UBC, University of Michigan research 2
(Date:7/29/2015)... NEW YORK , July 29, 2015 /PRNewswire/ ... neuropathology testing, announces increased partnerships with VA and ... offers Epidermal Nerve Fiber Density (ENFD) and Sweat ... of small fiber neuropathy ( https://therapath.com/skin ). ... Epidermal Nerve Fiber Density (ENFD) on punch skin ...
(Date:7/29/2015)... ... , ... The third Medical Innovation Impact Index (MI3) Alert considers FDA processes ... The current system received a score of 0 (range -10 to +10) for its ... of Fairleigh Dickinson University’s ( FDU ) Rothman Institute of Innovation and Entrepreneurship. Several ...
(Date:7/29/2015)... ... July 29, 2015 , ... Finding gooey or crusty material in the ... there are a considerable number of terms in popular use to describe it, ophthalmologists ... a mixture of mucus, blood cells, skin cells and dust, but until now there ...
(Date:7/29/2015)... ... ... Costello served as Lead Levee Design Engineering Manager for a feasibility study of ... future storm surge flooding, such as occurred in Hurricane Ike in 2008. , ... protection, Costello also balanced socio-economic and environmental needs and concerns. The team ...
Breaking Biology Technology:Neuropathology services for VA and Military health systems 2Third Medical Innovation Impact Index Issued by Fairleigh Dickinson University’s Initiative for Patient-Centered Innovation (iPCI) 2Third Medical Innovation Impact Index Issued by Fairleigh Dickinson University’s Initiative for Patient-Centered Innovation (iPCI) 3What Are ‘Eye Crusties’ Made Of? uBiome Invites Citizen Scientists to Find Out 2What Are ‘Eye Crusties’ Made Of? uBiome Invites Citizen Scientists to Find Out 3What Are ‘Eye Crusties’ Made Of? uBiome Invites Citizen Scientists to Find Out 4Preventing Storm Surge Flooding in Houston 2
... officials announced today a five-year agreement with K.S.R. Educational ... training in nanomedicine and nanotechnology. "We are very ... 16 institutions of higher education in Tamil Nadu, India," ... has the same commitment to deliver quality education to ...
... Corp. (NASDAQ: KOOL ), a leading supplier ... adult stem cells, said today that its submission for ... to concentrate stem cells from cord blood, has been ... in China. This represents the successful completion of product ...
... Corporation (NASDAQ: UTHR ) (the "Company") today announced ... conditions, $210 million aggregate principal amount of convertible senior notes ... 144A under the Securities Act of 1933, as amended (the ... initial purchaser of the notes an option to purchase up ...
Cached Biology Technology:MU signs academic agreement with K.S.R. Educational Institutions of India 2ThermoGenesis Announces Acceptance of AXP® Submission by Regulatory Body in China 2ThermoGenesis Announces Acceptance of AXP® Submission by Regulatory Body in China 3United Therapeutics Announces Proposed Private Offering of $210 Million of Convertible Senior Notes and Authorization of Stock Repurchase Program 2United Therapeutics Announces Proposed Private Offering of $210 Million of Convertible Senior Notes and Authorization of Stock Repurchase Program 3United Therapeutics Announces Proposed Private Offering of $210 Million of Convertible Senior Notes and Authorization of Stock Repurchase Program 4
...
... 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: