The body size of ancient creatures, bivalves and brachiopods, could tell geoscientists a lot about the creatures’ life history and about the ecology of the times in which they lived. However, traveling the world to measure these creatures’ fossils would take several life-times and more travel funds than scientists usually have.
Since the same creatures have also become abundant in scientific literature since the mid 1800s, a team of Virginia Tech researchers is determining whether measuring photos of fossils collected worldwide would be a reliable way to compile body size data. Richard A. Krause Jr. of Greenfield, Wis., a PhD. student in the Department of Geosciences at Virginia Tech, will report on his assessment of this nontraditional approach at the joint meeting of the Northeastern and Southeastern Sections of the Geological Society of America, to be held March 25-27 in Tysons Corner, Va.
Bivalves (i.e. clams) are common today while brachiopods, which look like clams but have a different biology, were most common in ancient oceans. Both types of organism have been around for over 500 million years and still exist today, which makes them good subjects for an assessment of long-term body size trends. Changes in body size could reveal whether an organism evolved and became more efficient or whether environmental changes had an impact. "But no one has compiled a list of how body size changed for a group of animals over long time periods," Krause says. He and colleagues want to look at two time periods – from 500 million to 300 million years ago and from 200 million to 25 million years ago.
Susan Trulove | EurekAlert!
Strength of tectonic plates may explain shape of the Tibetan Plateau, study finds
25.07.2017 | University of Illinois at Urbana-Champaign
NASA flights gauge summer sea ice melt in the Arctic
25.07.2017 | NASA/Goddard Space Flight Center
Strong light-matter coupling in these semiconducting tubes may hold the key to electrically pumped lasers
Light-matter quasi-particles can be generated electrically in semiconducting carbon nanotubes. Material scientists and physicists from Heidelberg University...
Fraunhofer IPA has developed a proximity sensor made from silicone and carbon nanotubes (CNT) which detects objects and determines their position. The materials and printing process used mean that the sensor is extremely flexible, economical and can be used for large surfaces. Industry and research partners can use and further develop this innovation straight away.
At first glance, the proximity sensor appears to be nothing special: a thin, elastic layer of silicone onto which black square surfaces are printed, but these...
3-D shape acquisition using water displacement as the shape sensor for the reconstruction of complex objects
A global team of computer scientists and engineers have developed an innovative technique that more completely reconstructs challenging 3D objects. An ancient...
Physicists have developed a new technique that uses electrical voltages to control the electron spin on a chip. The newly-developed method provides protection from spin decay, meaning that the contained information can be maintained and transmitted over comparatively large distances, as has been demonstrated by a team from the University of Basel’s Department of Physics and the Swiss Nanoscience Institute. The results have been published in Physical Review X.
For several years, researchers have been trying to use the spin of an electron to store and transmit information. The spin of each electron is always coupled...
What is the mass of a proton? Scientists from Germany and Japan successfully did an important step towards the most exact knowledge of this fundamental constant. By means of precision measurements on a single proton, they could improve the precision by a factor of three and also correct the existing value.
To determine the mass of a single proton still more accurate – a group of physicists led by Klaus Blaum and Sven Sturm of the Max Planck Institute for Nuclear...
21.07.2017 | Event News
19.07.2017 | Event News
12.07.2017 | Event News
25.07.2017 | Physics and Astronomy
25.07.2017 | Earth Sciences
25.07.2017 | Life Sciences