Navigation Links
Caltech geobiologists discover unique 'magnetic death star' fossil
Date:10/22/2008

chumann, a geologist and electron microscopist at McGill University and lead author of the study, "It was easy to focus on the thousands of other bacterial fossils, but these single, unusual crystals kept appearing in the background. It soon became evident that they were everywhere."

In addition to their unusually large sizes, the magnetic crystals occur in a surprising array of shapes. For example, the spearhead-like crystals have a six-sided "stalk" at one end, a bulbous middle, and a sharp, tapered tip at the other end. Once reaching a certain size, spearhead crystals grow longer but not wider, a directed growth pattern that is characteristic of most higher biological organisms.

The spearhead magnetic crystals compose a minor fraction of all of the iron-oxide crystals in the PETM clay layer. Most of the crystals have smaller sizes and special shapes, which indicate that they are fossils of magnetotactic bacteria. This group of microorganisms, long studied at Caltech by study coauthor Joseph Kirschvink, the Nico and Marilyn Van Wingen Professor of Geobiology, use magnets to orient themselves within Earth's magnetic field, and proliferate in oxygen-poor water.

Spearheads are not, however, the rarest fossil type in the deposit. That honor belongs to a spherical cluster of spearheads informally dubbed the "Magnetic Death Star" by the researchers. The Magnetic Death Star may have preserved the crystals as they occurred in their original biological structure.

The researchers could not find a similar-shaped organism anywhere in the paleontological annals. They hypothesize that it may have been a single-celled eukaryote that evolved for the first time during the PETM and was outcompeted once the strange climate conditions of that time diminished. Alternatively, it may still exist today in a currently undiscovered location.

"The continental shelf of the mid-Atlantic states during the PETM must have been very iron-rich, much
'/>"/>

Contact: Kathy Svitil
ksvitil@caltech.edu
626-395-8022
California Institute of Technology
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Caltech engineers build firast-ever multi-input plug-and-play synthetic RNA device
2. Caltech scientists engineer supersensitive receptor, gain better understanding of dopamine system
3. Caltech biologists spy on the secret inner life of a cell
4. Caltech scientists create DNA tubes with programmable sizes for nanoscale manufacturing
5. Caltech researchers awarded $10M for molecular programming project
6. Caltech engineers build mini drug-producing biofactories in yeast
7. Caltech neurobiologists discover individuals who hear movement
8. Caltech scientists awarded $20 million to Power the Planet
9. Caltech researchers find dual-use sexual attraction and population-control chemicals in nematodes
10. UNC, Caltech research finds further evidence for genetic contribution to autism
11. New $11 million center to speed production of new compounds for drug discovery
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/18/2014)... NC Seeds that sprout as soon as they,re planted ... need to be more careful. In the wild, a plant ... day would risk disaster. More than just an insurance policy ... that seed dormancy has long-term advantages too: Plants whose ... rise to more species, finds in a team of researchers ...
(Date:4/17/2014)... , Respiratory syncytial virus (RSV) is a ... life-threating illness in very young and elderly populations. ... enters host cells through the fusion protein RSV ... interfering peptides that prevent bundle formation limit RSV ... susceptible to degradation. In this issue of the ...
(Date:4/17/2014)... Gauthier and Professor Luca Razzari of the nergie ... large grants from the John R. Evans Leaders ... for the acquisition of state-of-the-art biotech and nanophotonics ... grants from the Ministre de l,Enseignement suprieur, de ... Technologie (MESRST). These new laboratories will help us ...
Breaking Biology News(10 mins):Plants with dormant seeds give rise to more species 2JCI online ahead of print table of contents for April 17, 2014 2JCI online ahead of print table of contents for April 17, 2014 3JCI online ahead of print table of contents for April 17, 2014 4JCI online ahead of print table of contents for April 17, 2014 5JCI online ahead of print table of contents for April 17, 2014 6New state-of-the-art biotech and nanotech equipment for INRS 2
... bio-based plastic packaging is not only eco-friendly but also ... The plastic packaging industry is moving towards completely bio-based ... the production of plastics equates to approximately five per ... per cent of all plastics are used in packaging, ...
... well-known fairy tale, Rumpelstiltskin used magic to weave straw into ... to turn straw (and other forms of biomass) into today,s ... in which minute particles of gold dot the surface of ... two materials are strong enough to breaks the O-O bond ...
... Software Inc. of Ottawa, Canada announced today it ... lead its company awareness and lead generation campaigns. ... in developing integrated marketing programs that target embedded ... messaging and positioning, PR, content development, partner co-marketing ...
Cached Biology News:Plastic packaging industry is moving towards completely bio-based products 2Gases from grasses 2Gases from grasses 3Crank Software Selects TREW Marketing for Embedded Industry Outreach 2Crank Software Selects TREW Marketing for Embedded Industry Outreach 3
(Date:1/15/2014)... The Microcompetition with Foreign DNA theory explains how latent ... viruses is the Epstein Barr Virus (EBV), and one of ... a chronic inflammatory disease that destroys the body’s joints. As ... have high concentrations of EBV DNA in their bodies (1). ...
(Date:1/15/2014)... AudioNotch is the internet's leading provider of ... of tinnitus. Patients listen to sound therapy that is ... of weeks to months, their tinnitus volume decreases. , AudioNotch ... Music and Notched White Noise. Now, AudioNotch is pleased to ...
(Date:1/14/2014)... Histogen, Inc., a regenerative medicine company developing ... simulated embryonic conditions, today announced that they have entered ... for physician-dispensed aesthetic products containing Histogen’s proprietary multipotent cell ... an amendment to the existing license between Histogen and ...
(Date:1/14/2014)... Texas , Jan. 14, 2014 The ... and research medicinal plants and therapeutic derivatives thereof ... health professionals, and researchers about the challenges of ... http://photos.prnewswire.com/prnh/20100430/DC95601LOGO ) The Society ...
Breaking Biology Technology:Study: Rheumatoid Arthritis (RA) Patients Have EBV; The CBCD Says this is Consistent with Microcompetition 2Study: Rheumatoid Arthritis (RA) Patients Have EBV; The CBCD Says this is Consistent with Microcompetition 3Histogen and Suneva Medical Expand License for Cell Conditioned Media-based Aesthetic Products Internationally 2Histogen and Suneva Medical Expand License for Cell Conditioned Media-based Aesthetic Products Internationally 3World's Largest Group of Medicinal Plant Researchers Endorses ABC-AHP-NCNPR Botanical Adulterants Program 2World's Largest Group of Medicinal Plant Researchers Endorses ABC-AHP-NCNPR Botanical Adulterants Program 3World's Largest Group of Medicinal Plant Researchers Endorses ABC-AHP-NCNPR Botanical Adulterants Program 4World's Largest Group of Medicinal Plant Researchers Endorses ABC-AHP-NCNPR Botanical Adulterants Program 5World's Largest Group of Medicinal Plant Researchers Endorses ABC-AHP-NCNPR Botanical Adulterants Program 6World's Largest Group of Medicinal Plant Researchers Endorses ABC-AHP-NCNPR Botanical Adulterants Program 7World's Largest Group of Medicinal Plant Researchers Endorses ABC-AHP-NCNPR Botanical Adulterants Program 8
... Aug. 14 Pressure,BioSciences, Inc. (Nasdaq: PBIO ) ... the second quarter of 2008 was $120,184 compared to,$202,127 ... from the sale,of PCT products and services was $117,698 ... to $136,355 for the prior year period. During the,second ...
... drugs and devices that have ... the quality of human life -, PALO ALTO, Calif., ... announced that its chronic angina therapy,Ranexa(R) (ranolazine extended-releases tablets) has ... 2008 award which honors the,best pharmaceutical agent and best biotechnology ...
... TROY, Mich., Aug. 14 CJPS Enterprises, LLC, ... today that it,has put online more resources for ... market, or to grow their existing healthcare,business. Those ... This project is dedicated to providing users ...
Cached Biology Technology:Pressure BioSciences, Inc. Reports Second Quarter 2008 Financial Results and Provides Business Update 2Pressure BioSciences, Inc. Reports Second Quarter 2008 Financial Results and Provides Business Update 3Pressure BioSciences, Inc. Reports Second Quarter 2008 Financial Results and Provides Business Update 4Pressure BioSciences, Inc. Reports Second Quarter 2008 Financial Results and Provides Business Update 5Pressure BioSciences, Inc. Reports Second Quarter 2008 Financial Results and Provides Business Update 6Pressure BioSciences, Inc. Reports Second Quarter 2008 Financial Results and Provides Business Update 7Pressure BioSciences, Inc. Reports Second Quarter 2008 Financial Results and Provides Business Update 8Pressure BioSciences, Inc. Reports Second Quarter 2008 Financial Results and Provides Business Update 9CV Therapeutics Announces Ranexa(R) Named Finalist for Prix Galien USA 2008 Award 2CV Therapeutics Announces Ranexa(R) Named Finalist for Prix Galien USA 2008 Award 3The Michigan Life Sciences Pipeline Adds More Resources On Its Website 2
...
The BD CBA Human Apoptosis Kit can be used to quantitatively measure,cleaved PARP, Bcl-2, and active Caspase-3 protein levels in a single sample. The,Kit performance has been optimized for analysis o...
... package that provides crystallographers with an ... creation, set-up of experimental conditions and ... software helps crystallographers through the most ... Design of Crystallization ...
BD Falcon insert HTS 96 well, square A-bottom with lid. PET membrane, sterile. (5/ca) Packaging: 5 / pack, 5 / case ...
Biology Products: