Scientists discover extinct rodent species.Byline: ANI
Washington, July 29 (ANI): An international team of scientists has discovered an extinct rodent rodent, member of the mammalian order Rodentia, characterized by front teeth adapted for gnawing and cheek teeth adapted for chewing. The Rodentia is by far the largest mammalian order; nearly half of all mammal species are rodents. 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 The University of Valencia (official name in Catalan Universitat de València) is a Spanish university, located in the city of Valencia.
The Universitat de València is one of the oldest and largest universities in Spain, having been founded in 1499 and currently (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," said Francisco Javier Ruiz-Sanchez, lead author of the study.
The paleontologists have also confirmed the age of the find.
"The fossils found in the Morteral 20A deposit in Valencia show that this is the oldest species within the genus known in the world with absolute certainty," said Ruiz-Sanchez.
According to according to
1. As stated or indicated by; on the authority of: according to historians.
2. In keeping with: according to instructions.
3. this data, Eomyops noeliae would have lived during the Aragonese period "perhaps between the Lower and Middle Miocene The Middle Miocene is a sub-epoch of the Miocene Epoch made up of two stages: the Langhian and Serravallian stages.
The sub-epoch lasted from 15.97 ± 0.05 mya to 11.608 ± 0.005 Mya (million years ago). During this period, a sharp drop in global temperatures took place. (around 16 million years ago)", underscores the researcher.
The varied fauna fauna
All the species of animals found in a particular region, period, or special environment. Five faunal realms, based on terrestrial animal species, are generally recognized: Holarctic, including Nearactic (North America) and Paleartic (Eurasia and northern Africa); 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 taxa: see taxon. found show evidence that the environment was very wet", said Ruiz-Sanchez, even though the full study on all the fossil rodent remains.
The environment was "relatively thickly wooded, and the climate was wet", although other factors such as temperature have not yet been defined, according to the study.
The biogeographical bi·o·ge·og·ra·phy
The study of the geographic distribution of organisms.
bio·ge·og data also show that Eomyops noeliae lived throughout the east of the Iberian Peninsula Iberian Peninsula, c.230,400 sq mi (596,740 sq km), SW Europe, separated from the rest of Europe by the Pyrenees. Comprising Spain and Portugal, it is washed on the N and W by the Atlantic Ocean and on the S and E by the Mediterranean Sea; the Strait of Gibraltar 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.
According to Ruiz-Sanchez, 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". (ANI)
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