Paleontologists have discovered 4.9 million (Early Pliocene) fossilized ruins of an extinct flying squirrel Myopetaulista Webbi Tennessee, USA. Generation of the genus Myopetaulista Eastern North America is bewildered because it is separated from the known geographical range of the genus and the extent of organisms of its sister species. Petaurista. Researchers assume that Myopetaulista which is linked to a warm forest environment and was dispersed across North America through the Beringland Bridge during the warm phase of the early Pliocene.
The lifespan of a flying fossil squirrel Miopetaurista neogrivensis It indicates that the animal is ready to land on a tree branch. Image credit: Oscasani Sidro / ICP.
Myopetaulista Webbi It jumps over the sky in what is now southern Appalachia, sliding over rhinoceros, mastodons and red pandas.
New materials of this kind have been discovered in Grey Fossil Site In Tennessee.
“discovery Myopetaulista In North America, this genus was very unexpected because it is known only from Eurasia,” said Dr. Isaac Casanovas Bilar, paleontologist at Mikel Crusafont of paleontology at the University of Barcelona. .
“There have been some uncertain reports from Florida, but new specimens from the grey fossil site provide new information, with these giant flying squirrels coming together alongside other mammals around five million years ago. It helped me to make sure I crossed the bridge.”
According to paleontologists, Myopetaulista Webbi Probably closely related Myopetaulista Tarelionly known Pliocene Eurasian species.
“The Appalachians today may try to think of these ancient creatures as closely related to the squirrels that regularly see them,” the researchers said.
“However, their closest relatives are giant flying squirrels from Japan, China, and Indonesia.”
“These giant flying squirrels have a lightweight build, weighing around three pounds, and were pretty agile on the treetop.”
“When they arrived in Tennessee now, the world was much warmer than it is now.”
“Its warm climate allows squirrel ancestors to travel across North America and could slip through dense, damp forests like those preserved in the fossil records of grey sites millions of years ago.”
The new specimen is Myopetaulista A genus of North America.
“As the climate cooled over time, Pleistocene ice age led to the isolation of these giant flying squirrels in warm shelters like Florida, and ultimately contributed to their extinction.” Miquel Crusafont from the University of Barcelona.
“The Last American Myopetaulista It has lived for millions of years since the species of Eurasian of this genus disappeared.
Team's work It was published in Journal of Mammalian Evolution.
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M. Grau-Camats et al. 2025. Intercontinental Sliding: A Review of the North American Records of Giant Flying Squirrels Myopetaulista (Rodentia, Sciuridae) Description of new materials for the grey fossil site (Tennessee). J Mammal Evol 32, 8; doi:10.1007/s10914-025-09751-w
Source: www.sci.news
