Navigation Links
After 121 years, identification of 'grave robber' fossil solves a paleontological enigma
Date:11/19/2012

hort their evolutionary lineageor so scientists thought.

Before the conclusive identification of Necrolestes, only one member of the Meridiolestida was known to have survived the extinction event, and that species died out soon after, early in the Tertiary Period (651.8 million years ago). Necrolestes is therefore the only remaining member of a supposedly extinct group. Its the supreme Lazarus effect, comments Wible. How in the world did this animal survive so long without anyone knowing about it?

In the Lazarus effect, a species previously thought to be extinct is rediscoveredsometimes living, sometimes elsewhere in the fossil record. The Lazarus effect is well represented by the ginkgo tree, thought to be extinct until it was rediscovered growing in China in the 17th century.

The researchers believe that Necrolestess supreme burrowing adaptations are exactly what enabled it to survive for 45 million years longer than its relatives. Theres no other mammal in the Tertiary of South America that even approaches its ability to dig, tunnel, and live in the ground, explains Wible. It must have been on the edges, in an ecological niche that allowed it to survive. The researchers point out that other extinct digging species are known by many specimens, while Necrolestes is only known from a few fossils from a narrow geographic area. This means it was not abundant in its time, which fits with the model of a life form existing in a marginal environment. Rougier comments, In a way, while not related, its somewhat similar to how the platypus lives today. There arent many of them, they are found only in Australia, and they live in a specific niche among modern mammalsjust as Necrolestes is an isolated lineage only found in South America, with very few individuals living among large numbers of marsupials.

Future research

Necrolestess survival for 45 million years longer than expected challenges more than
'/>"/>

Contact: Leigh Kish
KishL@carnegiemnh.org
412-622-3361
Carnegie Museum of Natural History
Source:Eurekalert  

0

GOOD

Page: 1 2 3 4 5

Related biology news :

1. 1 year after Fukushima
2. AGU: Venice hasnt stopped sinking after all
3. Black flies may have a purpose after all
4. Estrogen hormone reveals protective ability after traumatic brain injury
5. Obstructive sleep apneas damage evident after 1 month
6. Scientists read the ash from the Icelandic volcano 2 years after its eruption
7. Microbial communities shifted dramatically after Deepwater Horizon spill
8. Regenerated cells may restore vision after corneal dysfunction
9. Cinega de Santa Clara unchanged after pilot run of Yuma Desalting Plant
10. Promiscuous squid fatigued after mating
11. Ethylene of no effect - why peppers do not mature after picking
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
After 121 years, identification of 'grave robber' fossil solves a paleontological enigma
(Date:5/22/2013)... engineering drastically reduces the time and effort needed ... of biotechnology, scientists are reporting. Published in the ... paves the way for more rapid development of ... other activities. , Keith Shearwin and colleagues explain ... genetic material DNA into a bacterium,s genome is ...
(Date:5/22/2013)... life scientists provide important new details on how climate ... online May 21 in the Journal of Animal ... making accurate predictions and informing policymakers of how species ... , "There is a growing recognition among biologists ... one another, and that this is going to have ...
(Date:5/21/2013)... known for a long time that some creatures evolve ... particularly for plants. But it may be that height ... University and the U. S. National Evolutionary Synthesis Center. ... May in the journal Nature Communications , Lanfear ... , Drawing from a database of global patterns in ...
Breaking Biology News(10 mins):UCLA life scientists present new insights on climate change and species interactions 2UCLA life scientists present new insights on climate change and species interactions 3UCLA life scientists present new insights on climate change and species interactions 4UCLA life scientists present new insights on climate change and species interactions 5Small but speedy: Short plants live in the evolutionary fast lane 2
... found that pressure from increasing coastal populations, ship and ... critically threatening the health of the Florida Keys ecosystem. ... turtles and coral habitat continue to be at risk ... were released today in the Condition Report 2011 for ...
... the Gulf of Mexico; Pan American biofuels and ... Marcellus shale; sustainable water systems, energy systems, and ... the focus of new grants totaling $8 million ... Engineering and Education for Sustainability (SEES) activity, in ...
... S.C. The National Science Foundation (NSF) has awarded ... deploy a basinwide network of computerized sensors to monitor ... River. "The Intelligent River research represents a ,big ... university to improve economic conditions through scientific research and ...
Cached Biology News:NOAA releases status on Florida Keys National Marine Sanctuary marine resources 2National Science Foundation makes first awards in Sustainability Research Coordination Program 2National Science Foundation makes first awards in Sustainability Research Coordination Program 3National Science Foundation makes first awards in Sustainability Research Coordination Program 4National Science Foundation makes first awards in Sustainability Research Coordination Program 5Clemson's Intelligent River technology to provide real-time monitoring of river 2Clemson's Intelligent River technology to provide real-time monitoring of river 3Clemson's Intelligent River technology to provide real-time monitoring of river 4
(Date:5/23/2013)... 2013 Watlow®, an industry leader ... systems, recently introduced its new catalog, Watlow® Heating ... in designing and manufacturing industrial heaters, Watlow provides ... serve diverse customer needs. , A description of ... beginning of the book. These options allow high ...
(Date:5/22/2013)... 22, 2013 Industry leaders from ... for the Oak Ridge National Laboratory’s Biosurveillance ... place at the Hilton Alexandria Mark Center. Held ... 2013 conference on June 18 - 19. ... AdSave, American Elements, Applied Research Associates, ARA, AttaGene, ...
(Date:5/22/2013)... 22, 2013   Oligomerix, Inc. , a ... modifying therapeutics for Alzheimer,s disease (AD) and related ... Series B financing, which includes both issuance of ... represent approximately $2.8M in new investments in the ... the raise. Funding from the ...
(Date:5/22/2013)... Genedata, a leading provider of ... and life science research, today announced AB Enzymes ... its bioinformatics platform for strain genome data management ... AB Enzymes, one of the world’s oldest and ... Genedata Selector accompanied by bioinformatics consulting services. Genedata ...
Breaking Biology Technology:Watlow Introduces Its New Industrial Heater Catalog 2Biodetection Technologies 2013 and Oak Ridge National Lab’s Biosurveillance Symposium to Bring Together Leading Organizations in Alexandria, VA from June 17-19, 2013 2Biodetection Technologies 2013 and Oak Ridge National Lab’s Biosurveillance Symposium to Bring Together Leading Organizations in Alexandria, VA from June 17-19, 2013 3Biodetection Technologies 2013 and Oak Ridge National Lab’s Biosurveillance Symposium to Bring Together Leading Organizations in Alexandria, VA from June 17-19, 2013 4Biodetection Technologies 2013 and Oak Ridge National Lab’s Biosurveillance Symposium to Bring Together Leading Organizations in Alexandria, VA from June 17-19, 2013 5Oligomerix, Inc. Completes Series B Financing 2Oligomerix, Inc. Completes Series B Financing 3AB Enzymes Chooses Genedata Selector for Production Strain Development and Optimization 2AB Enzymes Chooses Genedata Selector for Production Strain Development and Optimization 3AB Enzymes Chooses Genedata Selector for Production Strain Development and Optimization 4
... Ive been hawking the concept of the I-Q Corridor connecting Chicago, ... no surprise I would think its swell that the mayors of ... again, its still something of a shock that it may be ... of Wisconsin history to know that past Milwaukee mayors often looked ...
... piracy were reported in several emerging markets, but 35 ... worldwide in 2005 was illegal, amounting to $34 billion ... by the Business Software Alliance . , ,The ... developers, said improvements in a number of markets indicate ...
... Wis. - An imaging technology that holds the hope ... get its first commercial test at a prominent Boston hospital. ... to hybrid imaging technology, has announced the first installation of ... Hospital . , ,According to GE, the technology is ...
Cached Biology Technology:A (modern) Tale of Two Cities: Milwaukee and Madison inch together 2A (modern) Tale of Two Cities: Milwaukee and Madison inch together 3Software piracy declines in emerging markets 2GE announces first installation of Discovery VCT 2
... coating stabilizer is designed for stabilizing ... and antibodies for immunoassay development. ... during the coating and drying process ... It can also works as a ...
... The TC-3000 is one of the smallest thermal ... a choice of either the 0.5ml (20 samples) ... Features: , Fast heating and cooling rate ... reliability and high performance Fast track programming ...
... anti-freeze environment for enzyme conjugated antibodies and ... viscosity solution at -20C , No ... is convenient , Contains preservatives to ... Protect enzyme conjugates during storage without the ...
A collection of 42 spots with normal tissues from different organs of C57 mice, rat and human....
Biology Products: