Navigation Links
Paleontologists learn how not to become a fossil

everywhere from deep-sea trenches and intertidal zones to freshwater lakes and streams. But do they all have the same chance of becoming fossils?

Jablonski, Kidwell and their colleagues based their study on an examination of museum specimens, combing the scientific literature and conducting statistical analyses. They determined the fossil occurrence of all 1,282 major types living today, then assessed why 24 percent of them failed to become fossils. In some cases, key factors were inextricably linked. "For example, deep-water species tend to have small bodies because there's so little food down there," Jablonski said. "Small body size turns out to be bad news for preservation in general, and thus deep-sea species are undercaptured."

Surprisingly, they found that burrowing clams living within sediments were no more likely to become fossils than similarly sized varieties that lived out in the open.

Perhaps fittingly, parasitic clams fared the worst. "They live inside the burrow of another animal, like a shrimp, or they live parasitically upon the soft tissues of another organism. These guys have a lousy fossil record," Kidwell said. "If you're living inside the tissues, or directly attached to the tissues of another organism and it dies, then you're attached to a corpse of decaying organic matter, which is not favorable to shell preservation."

The team also found that shell composition played virtually no role in distorting the bivalve fossil record, echoing the findings of a related study that Kidwell published in the Feb. 11, 2005, issue of the journal Science. That study showed, contrary to longstanding expectations, that clams with durable shells were not better represented in the fossil record than those more prone to dissolving.

The PNAS co-authors suggest three remedies for dealing with the weaknesses they've documented in the fossil record. First, leave out the poorly documented groups. "Set some kind of cutoff on the q
'"/>

Source:University of Chicago


Page: 1 2 3

Related biology news :

1. Paleontologists discover new mammal from Mesozoic Era
2. Structure-building cell signals also may influence learning and memory
3. Building a protein name dictionary from full text: a machine learning term extraction approach
4. Mice brains shrink during winter, impairing some learning and memory
5. More animals join the learning circle
6. Insight into the processes of positive and negative learners
7. Researcher says flu responders can learn from 1918 epidemic
8. Researchers learn how blood vessel cells cope with their pressure-packed job
9. Neurons generated in the adult brain learn to respond to novel stimuli
10. Scientists learn to predict protein-stabilizing ability of small molecules
11. Picking apart how neurons learn
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Paleontologists learn how not become fossil

(Date:8/21/2014)... previously unknown process for harvesting energy and producing oxygen ... State University scientist has discovered. The discovery lays the ... harvesting energy from the Sun, and understanding dense blooms ... lakes worldwide. A paper describing the discovery will be ... the journal Science on 21 August 2014. ...
(Date:8/21/2014)... Israel Deaconess Medical Center (BIDMC ) are among the ... Minds 2014," a comprehensive list compiled by ... science metrics and research performance analysis. , ... performing and publishing work that their peers recognized as ... a Thomson Reuters statement. Researchers were identified based on ...
(Date:8/21/2014)... study recently published in the journal Carcinogenesis ... new role for the protein adenomatous polyposis coli (APC) ... cancer-related deaths in the U.S. , Lead author Kristi ... and co-leader of the Cancer Biology program at the ... her career trying to understand the various activities of ...
Breaking Biology News(10 mins):Hot-spring bacteria reveal ability to use far-red light for photosynthesis 2Hot-spring bacteria reveal ability to use far-red light for photosynthesis 3BIDMC researchers named among 'the most influential scientific minds' 2BIDMC researchers named among 'the most influential scientific minds' 3Research offers insight into cellular biology of colorectal cancer 2Research offers insight into cellular biology of colorectal cancer 3
... The citrus disease Huanglongbing (HLB), meaning "yellow shoot ... in English-speaking countries, is the most destructive disease ... tools and management strategies are desired to control ... phosphorus deficiency as a contributing factor in symptom ...
... species of scorpion, Vaejovis brysoni, was found in the ... the same group also inhabits this mountain range, making this ... species distributed on the same mountain. The study was published ... . These mountains overlook the city of Tucson, Arizona. ...
... Sloan Foundation is pleased to announce the selection of ... Sloan Research Fellowships for 2013. , Awarded annually ... and scholars whose achievements and potential identify them as ... "The Sloan Research Fellows are the best of the ...
Cached Biology News:Phosphorus starvation linked to symptoms of citrus disease Huanglongbing in new study 2Phosphorus starvation linked to symptoms of citrus disease Huanglongbing in new study 3Sloan Foundation announces 2013 Sloan Research Fellows 2
(Date:8/22/2014)... Aug. 22, 2014 /PRNewswire/ - BIOREM Inc. (TSXV: BRM) ("Biorem" or "the ... ended June 30, 2014.  Biorem,s complete 2014 second quarter financial statements and ... Summary:Three-months ended June 30, , Six-months ended June ... , 2013 , 2014 , 2013 ... , 9,195 Gross profit , 56 , ...
(Date:8/22/2014)... published today (August 22nd), in the scientific journal ... Neuroscience Programme establish the effect of serotonin on ... genetic and optical techniques., "Serotonin is a small ... range of brain functions, from the control of ... emotional behaviours, This neurotransmitter is also popularly thought ...
(Date:8/22/2014)... investigated for application as catalysts, sensors, drug ... in photonics and molecular electronics. Gaining knowledge ... physical and chemical properties, has been challenging. ... demonstrated that high-resolution electron microscopy can be ... which all gold atoms are observed. The ...
(Date:8/22/2014)... The Global and China Diabetes Drugs Industry ... state of the Diabetes Drug industry in Global and ... the industry, including definitions, applications and industry chain structure. ... provided with a focus on history, developments, trends and ... international and Chinese situation is also offered. , The ...
Breaking Biology Technology:Biorem Reports 2014 Second Quarter Results 2Biorem Reports 2014 Second Quarter Results 3From happiness to pain: Understanding serotonin's function 2A breakthrough in imaging gold nanoparticles to atomic resolution by electron microscopy 2Diabetes Drugs Industry Growth Analysis in Global, China Regions Research Report Available at DeepResearchReports.com 2Diabetes Drugs Industry Growth Analysis in Global, China Regions Research Report Available at DeepResearchReports.com 3
... , MISSOULA, Mont., June 24 VEGA PROMOTIONAL SYSTEMS, ... owned subsidiary, Natural Fuels Industries, it is planning to ... to produce alternative energy from organic waste. , ... "America,s Best Places For Alternative Energy," the abundance of ...
... BOTHELL, WA, and VANCOUVER, June 24 /PRNewswire-FirstCall/ - OncoGenex ... that the company has reached an agreement with the ... protocol assessment process (SPA) on an amendment to the ... its lead product candidate targeting castrate resistant prostate cancer ...
... Higher Percentage of Patients Have Preventative Testing , ... Advice Networks , the nation,s leading provider of ... Healthy Advice educational programs, 16.9 percent more ... percent more patients had colonoscopies (colon cancer screening) compared ...
Cached Biology Technology:Natural Fuels Industries Eyes 'Biomass Rich' Georgia for Production Facility 2Natural Fuels Industries Eyes 'Biomass Rich' Georgia for Production Facility 3OncoGenex Pharmaceuticals Completes Amendment to Phase 3 Special Protocol Assessment for Confirming Survival Benefit in Patients Receiving OGX-011 with First-Line Docetaxel for Metastatic Prostate Cancer 2OncoGenex Pharmaceuticals Completes Amendment to Phase 3 Special Protocol Assessment for Confirming Survival Benefit in Patients Receiving OGX-011 with First-Line Docetaxel for Metastatic Prostate Cancer 3OncoGenex Pharmaceuticals Completes Amendment to Phase 3 Special Protocol Assessment for Confirming Survival Benefit in Patients Receiving OGX-011 with First-Line Docetaxel for Metastatic Prostate Cancer 4OncoGenex Pharmaceuticals Completes Amendment to Phase 3 Special Protocol Assessment for Confirming Survival Benefit in Patients Receiving OGX-011 with First-Line Docetaxel for Metastatic Prostate Cancer 5Healthy Advice Networks Announces Improved Patient Outcomes in Physicians' Offices with Healthy Advice Programs 2
Contains 100 positive controls for effective screening of HDAC inhibitors by fluorometric method....
dynactin 4, mRNA (cDNA clone MGC:3248 IMAGE:3505855), complete cds...
One-step, microplate or cuvet, colorimetric, detection range 0.01 g/dL to 5 g/dL. Procedure: 5 min....
MOUSE ANTI PROTEIN KINASE C BETA 2 Immunogen: Protein kinase C beta 2...
Biology Products: