'Flying Dragon' dinosaur roamed the southern skies too, scientists say
SANTIAGO : Scientists in Chile's Atacama Desert have unearthed the fossil remains of a so-called 'flying dragon,' a Jurassic-era dinosaur previously known only to the northern hemisphere.The flying reptile belonged to a group of early pterosaurs that roamed the earth 160 million years ago. It had a long p
LinkedIn SANTIAGO : Scientists in Chile's Atacama Desert have unearthed the fossil remains of a so-called"flying dragon," a Jurassic-era dinosaur previously known only to the northern hemisphere.rotection.Thai researchers are developing a sweat-based mobile virus detector, and road-tested it on shopkeepers at a Bangkok food market this week..
The flying reptile belonged to a group of early pterosaurs that roamed the earth 160 million years ago.It had a long pointed tail, wings and sharp, outward pointing teeth.DELTA - STILL DOMINANT The Delta variant first detected in India remains the most worrisome.The beast's fossil remains were discovered by Osvaldo Rojas, director of the Atacama Desert Museum of Natural History and Culture, and then further investigated by scientists at the University of Chile.Chadin -- who said the test was 95 percent accurate -- hopes it might be rolled out as an affordable alternative to more expensive swab tests that require lab processing.Details of the discovery, the first linking such creatures to the Southern Hemisphere, were published in the journal Acta Palaeontologica Polonica.The WHO classifies Delta as a variant of concern, meaning it has been shown capable of increasing transmissibility, causing more severe disease or reducing the benefit of vaccines and treatments."This shows the distribution of the animals in this group was wider than what was known up to now," said Jhonatan Alarcon, a University of Chile scientist who led the investigation.
The discovery points to close ties and possible migration between the northern and southern hemispheres at a time when most of the globe's southerly land masses where believed to be linked in a supercontinent called Gondwana.Chinese researchers found that people infected with Delta carry 1,260 times more virus in their noses compared with the original version of the coronavirus.Subjects place a cotton swab under their arms for 15 minutes, before the swab is put in a glass vial and sterilised with UV rays.”There are pterosaurs of this group also in Cuba, which apparently were coastal animals, so most likely they have migrated between the North and the South or maybe they came once and stayed, we don't know," Alarcon said.Chile's vast Atacama Desert, once largely submerged beneath the Pacific Ocean, is now a moonscape of sand and stone.S.The region, parts of which haven't seen rain for decades, is a hot spot for fossil discoveries, with many remains untouched in remote areas not far beneath the desert surface.The sweat tests received the thumbs-up from Bangkok market vendors, who said it was much more pleasant than nostril swab tests.(Reporting by Dave Sherwood; Editing by Cynthia Osterman) Source: Reuters.While the original coronavirus took up to seven days to cause symptoms, Delta can cause symptoms two to three days faster, giving the immune system less time to respond and mount a defense.
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