Serikornis sungei had 4 wings but couldn’t fly

From National Geographic’s web page:

http://news.nationalgeographic.com/2017/08/feathered-dinosaur-four-wings-species-serikornis-science/?

A pheasant-size dinosaur found in China is causing a stir among scientists trying to understand the origins of flight.

Most of the physicians have suggested for the usage of other libido enhancers. sildenafil cost Only when cialis 40 mg the doctor has prescribed for you. This kind of element part furthermore affords the needed vaginal conformity towards girl’s reproductive system wood therefore they are able viagra pills to attain strong erection of their penile region & leads for enough difficulties during the sessions of copulation. Long term use of tobacco or smoking, blood levitra professional cheapest diseases such as sickle cell anemia and leukemia can also lead to male impotence.

The newly named species, Serikornis sungei, adds to the ranks of dinosaurs that effectively had four wings, thanks to heavily feathered hindlimbs and forelimbs. But in a twist for paleontologists, the evidence suggests that Serikornis couldn’t fly.

“The feathering of Serikornis shows for the first time a complete absence of barbules—that is, the microstructures that allow feathers to resist air pressure during wing beats,” says study leader Ulysse Lefèvre, a paleontologist at the Royal Belgian Institute of Natural Sciences in Brussels.