An international team of scientists has discovered an extinct rodent species, based on fossil tooth remains found in Alborache, Valencia. Eomyops noeliae, from the Eomyidae family, represents the oldest find within this genus in the world.
The small number of fossils found has prevented the scientists from the University of Valencia (UV), who have led this research study, from being able to gain a full picture of this "new" rodent. However, they have been able to prove – on the basis of just the teeth, the only fossil remains discovered – that Eomyops noeliae was morphologically and biometrically different from other rodents of the Eomyops genus. The new species provides valuable evolutionary, biostratigraphic and paleoenvironmental information related to this rodent, which was of average size within the group."Until now, the Eomyops genus was made up of a group of small species and one large one, but no intermediately-sized kinds such as Eomyops noeliae had been found", Francisco Javier Ruiz-Sánchez, lead author of the study published in the French journal Comptes Rendus Palevol and a researcher in the UV's Department of Geology, tells SINC.
The rodent's wet environment
The varied fauna of micro-mammals and the new species found in the Valencian deposit provide information about the environmental conditions in which these animals would have lived at the time. "The rodent taxa found show evidence that the environment was very wet", says Ruiz-Sánchez, even though the full study on all the fossil rodent remains, begun with this new eomyid, has still not been completed.
According to the study, the environment was "relatively thickly wooded, and the climate was wet", although other factors such as temperature have not yet been defined.
The biogeographical data also show that Eomyops noeliae lived throughout the east of the Iberian Peninsula during the Lower-Middle Miocene. This has been confirmed from the Eomyops species remains excavated from the "most recent" Morteral 22 deposit, which is very close to Morteral 20A.
Ruiz-Sánchez says the finds of this species' teeth in deposit strata separated by just a few metres show that "how this species survived in the east of the peninsula over a specific time period that is currently hard to define, but which must have gone on for several tens of thousands of years".
Reference: Ruiz-Sánchez, Francisco Javier; Lázaro Calatayud, Belén; Freudenthal, Matthijs. "Eomyops noeliae sp nov., a new Eomyidae (Mammalia, Rodentia) from the Aragonian of Spain" Comptes Rendus Palevol 8(4): 375-384 may-june 2009.
SINC | EurekAlert!
Ion treatments for cardiac arrhythmia — Non-invasive alternative to catheter-based surgery
20.01.2017 | GSI Helmholtzzentrum für Schwerionenforschung GmbH
Seeking structure with metagenome sequences
20.01.2017 | DOE/Joint Genome Institute
An important step towards a completely new experimental access to quantum physics has been made at University of Konstanz. The team of scientists headed by...
Yersiniae cause severe intestinal infections. Studies using Yersinia pseudotuberculosis as a model organism aim to elucidate the infection mechanisms of these...
Researchers from the University of Hamburg in Germany, in collaboration with colleagues from the University of Aarhus in Denmark, have synthesized a new superconducting material by growing a few layers of an antiferromagnetic transition-metal chalcogenide on a bismuth-based topological insulator, both being non-superconducting materials.
While superconductivity and magnetism are generally believed to be mutually exclusive, surprisingly, in this new material, superconducting correlations...
Laser-driving of semimetals allows creating novel quasiparticle states within condensed matter systems and switching between different states on ultrafast time scales
Studying properties of fundamental particles in condensed matter systems is a promising approach to quantum field theory. Quasiparticles offer the opportunity...
Among the general public, solar thermal energy is currently associated with dark blue, rectangular collectors on building roofs. Technologies are needed for aesthetically high quality architecture which offer the architect more room for manoeuvre when it comes to low- and plus-energy buildings. With the “ArKol” project, researchers at Fraunhofer ISE together with partners are currently developing two façade collectors for solar thermal energy generation, which permit a high degree of design flexibility: a strip collector for opaque façade sections and a solar thermal blind for transparent sections. The current state of the two developments will be presented at the BAU 2017 trade fair.
As part of the “ArKol – development of architecturally highly integrated façade collectors with heat pipes” project, Fraunhofer ISE together with its partners...
19.01.2017 | Event News
10.01.2017 | Event News
09.01.2017 | Event News
20.01.2017 | Awards Funding
20.01.2017 | Materials Sciences
20.01.2017 | Life Sciences