Navigation Links
Scientists discover 356 animal inclusions trapped in 100 million years old opaque amber
Date:4/1/2008

This release is available in French.

Paleontologists from the University of Rennes (France) and the ESRF have found the presence of 356 animal inclusions in completely opaque amber from mid-Cretaceous sites of Charentes (France). The team used the X-rays of the European light source to image two kilogrammes of the fossil tree resin with a technique that allows rapid survey of large amounts of opaque amber. At present this is the only way to discover inclusions in fully opaque amber.

Opaque amber has always been a challenge for paleontologists. Researchers cannot study it because the naked eye cannot visualize the presence of any fossil inclusion inside. In the Cretaceous sites like those in Charentes, there is up to 80% of opaque amber. It is like trying to find, in complete blindness, something that may or may not be there.

However, the paleontologists Malvina Lak, her colleagues from the University of Rennes and the ESRF paleontologist Paul Tafforeau, together with the National Museum of Natural History of Paris, have applied to opaque amber a synchrotron X-ray imaging technique known as propagation phase contrast microradiography. It sheds light on the interior of this dark amber, which resembles a stone to the human eye. Researchers have tried to study this kind of amber for many years with little or no success. This is the first time that we can actually discover and study the fossils it contains, says Paul Tafforeau.

The scientists imaged 640 pieces of amber from the Charentes region in southwestern France. They discovered 356 fossil animals, going from wasps and flies, to ants or even spiders and acarians. The team was able to identify the family of 53% of the inclusions.

Most of the organisms discovered are tiny. For example, one of the discovered acarians measures 0.8 mm and a fossil wasp is only 4 mm. The small size of the organisms is probably due to the fact that bigger animals would be able to escape from the resin before getting stuck, whereas little ones would be captured more easily, explains Malvina Lak.

Water to see tiny fossils better

The surface features of amber pieces, like cracks, stand out more in the images than the fossil organisms in the interior when using synchrotron radiation. In order to solve this problem, scientists soaked the amber pieces in water before the experiment. Because water and amber have very similar densities, immersion made the outlines of the amber pieces and the cracks almost invisible. At the same time, it increased overall inclusion visibility, leading to better detection and characterization of the fossils.

Classification of species

Once discovered on the radiographs, some of the organisms were imaged in three dimensions and virtually extracted from the resin. The high quality of these 3D reconstructions enables paleontologists to precisely study and describe the organisms. The success of this experiment shows the high value of the ESRF for the study of fossils. Opaque amber hosts many aspects of past life on our planet that are still unknown, and the use of third generation synchrotron sources will continue to play an important role in unveiling them, asserts Malvina Lak.


'/>"/>

Contact: Montserrat Capellas
capellas@esrf.fr
33-476-882-663
European Synchrotron Radiation Facility
Source:Eurekalert  

Related biology news :

1. Great Ape Trust to gather internationally recognized scientists for Decade of the Mind III
2. CSHL scientists part of team that discovers role of rare gene mutations in schizophrenia
3. CSHL scientists identify a mechanism that helps fruit flies lock-in memories
4. Scientists find that squid beak is both hard and soft, a material that engineers want to copy
5. Scientists launch first comprehensive database of human oral microbiome
6. NYU scientists set stage for understanding how color vision is processed
7. Scientists launch human oral microbiome database
8. Yale scientists show that a microRNA can reduce lung cancer growth
9. Texas A&M scientists say early Americans arrived earlier
10. Scientists find color vision system independent of motion detection
11. Crop scientists discover gene that controls fruit shape
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Scientists discover 356 animal inclusions trapped in 100 million years old opaque amber
(Date:3/2/2017)... Summary This report provides all the information you ... activities since 2010. ... Read the full report: http://www.reportlinker.com/p03605615-summary/view-report.html ... an in-depth insight into the partnering activity of one of ... company reports are prepared upon purchase to ensure inclusion of ...
(Date:2/28/2017)... , Feb. 28, 2017   Acuant , ... software globally, announces significant enhancements to new and core ... 2016. New products include mobile and desktop Acuant FRM ... TM - a real time manual review of ... idScan® technology provides the fastest and most accurate capture ...
(Date:2/24/2017)... -- EyeLock LLC, a leader of iris-based identity authentication ... solution on the latest Qualcomm® Snapdragon™ 835 mobile ... Congress 2017 (February 27 – March 2, ... Stand 3E10. The Snapdragon 835 ... combination of hardware, software and biometrics technologies ...
Breaking Biology News(10 mins):
(Date:3/23/2017)... 23, 2017  SeraCare Life Sciences, Inc., a ... vitro diagnostics manufacturers and clinical laboratories, is ... multiplexed Inherited Cancer reference material ... next-generation sequencing (NGS). The Seraseq™ Inherited Cancer DNA ... from industry experts to validate the ability ...
(Date:3/23/2017)... -- NetworkNewsWire Editorial Coverage  ... Cancer remains one of the ... care systems, in terms of costs and resources. However, as ... development of innovative and efficient therapies that demonstrate higher chances ... of cancer treatments, a growing number of patients receiving immuno-oncology ...
(Date:3/22/2017)... , March 22, 2017 Regeneron Pharmaceuticals, Inc. ... Regeneron Genetics Center (RGC), U.K. Biobank and GSK to generate ... U.K. Biobank resource. The initiative will enable researchers to gain ... medicines for a wide range of serious and life threatening ... ...
(Date:3/22/2017)... Oramed Pharmaceuticals Inc. (NASDAQ: ... ), a clinical-stage pharmaceutical company focused on ... today that Dr. Miriam Kidron , Oramed,s ... "Oral Insulin for Diabetes Treatment: Bypassing the Roadblock," ... Peptide Therapeutics (OPT) Boston Conference in Cambridge, ...
Breaking Biology Technology: