By Will Dunham
(Reuters)-A new analysis of Archeopsyx fossils is revealed by a dove size in the Chicago Field Museum collection, a group of unknown features of the previously known bird, providing an insight into its feathers, hands, feet and heads.
The sample, which was discovered in southern Germany, is one of the most complete and preserved fossils of 14 well -known fossils from Archeopteryx that has been identified since 1861. The first archepsyx fossils, with an EvATALITY mix, discovered the natural sensation of British Charles ideas.
The new study, which examines the Chicago mushrooms using UV light to make soft tissue and a tomography to distinguish the fine details that are still included in the rock, shows that after 164 years, there is more to learn about this famous creature that took the journey 150 million years ago during the Jurassic period.
The researchers identified the anatomical features that indicate that although Archeopsyx was able to fly, he spent a lot of time on the ground and may have been able to climb trees.
Scientists first identified the archeopsyx mushrooms the presence of a specialized feathers called TERTIALS on both wings. The deepest flying feathers in the wing are linked to the upper humerus in the upper arm. Birds developed from small feathered dinosaurs, which lacked TERTIALS. Their discovery in Archeopsyx, according to researchers, indicates that the swelling, which is present in many birds today, has evolved specifically for flying.
Dinasers had feathers that lacked the bed the gap between the feathered surface of their upper arm and the body.
“To generate lifting, the dynamic antenna surface should be continuing with the body. So in order to use feathers wings to develop, dinosaurs had to fill this gap – as we see in Archeopteryx,” said the world of excavation, the world of excavation, Jinjami Okunor, the main author of the study in the magazine magazine.
“Although we studied Archeopsyx for more than 160 years, many basic information is still controversial. Is it a bird? Can it fly?
The sensitive sample, which was preserved in three dimensions instead of flat, such as many fossils, was prepared in the form of a scene to protect the residue of the soft tissue, which glowed under the ultraviolet light.
Birds are the only members in the proportions of dinosaurs that survived mass extinction 66 million years ago, due to the amazing asteroid. Archeopsyx boasts of reptiles such as teeth, long and bone tail, claws on their hands, along with bird -like features such as wings that consist of large, asymmetric feathers.
It seems that the soft tissue of her finger platforms has been adapted to spend a lot of her life on the ground, in line with the limited aviation capabilities that Archeopsyx believed to have.
“This does not mean that he cannot sit. He can do it well. But the point is that it is near the start of the energy -powered trip, Archeopsyx was still spending most of its time on the ground,” said Alex Clark.
The soft tissue on the hand indicates that the first and third fingers were mobile and can be used for climbing.
The examination of the archeopsyx palate – the roof of the mouth – confirmed that its skull was unlikely, unlike many living birds. But there was a structural evidence in the early stages of the development of the trait that allows the beak to transmit independently from the brain, as it appears in modern birds.
The fossil has a full full ARCHeopsyx, including two small paragraphs on the tip that shows that it contains 24 vertebrae, one more than previously thought.
Last year, the Museum announced the acquisition of Al -Ahfouri, who said that it was in the hands of a series of private sector colleges since it was discovered before 1990.
“It can be said that this sample is the best arishopsyx at all, and we learn a lot of new things from it,” said Okonor.
“I consider Archeopsyx the most important fossil species in all ages. It is, after all, the icon of development, and development is the unified concept of biological sciences. Not only Archeopterix is the oldest known fossil bird, where birds today were the most successful descendants in the lands, but the species that show that birds in which birds live.”
(Will Dunaham’s reports in Washington, edited by Rozlabba O’Brien) participated in the reports of Will Dun.
