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Scientists have discovered the first well preserved ossification stone in nearly 100 years

via:cnBeta.COM     time:2021/1/26 12:09:47     readed:67

According to foreign media CNET,For the first time, scientists have discovered and analyzed a well preserved part of the skull of Parasaurolophus cyrtocristatus, a rare species of Parasaurolophus cyrtocristatus,This is the first time in nearly 100 years that a complete skull of this dinosaur species has been found. In a new study published in the Journal peerj, this skull is introduced in detail, showing the complete structure of this biomarker rod-shaped crown, providing new clues for the evolution of this strange crown, which has been a controversial topic for paleontologists for decades.


"Over the past 100 years, ideas for the use of exaggerated crowns have ranged from submersibles to super sniffers," said David Evans, vice president of natural history at the Royal Museum of Ontario. "But after decades of research, we now believe that these crowns function primarily as acoustic resonators and visual displays for communication within our species."

This part of the dinosaur skull was discovered in 2017 by Erin spear, a researcher of Smithsonian ecology who was part of the team of paleontologists at the Denver Museum of nature and science exploring Northwest New Mexico. Three known Parasaurolophus species have been found in excavations from Alberta, Canada to New Mexico. The fossils can be traced back to 77 million to 73.5 million years.


The new study is the first to find a way to link paractylosaurus species found in southern North America with northern species found in Alberta, Canada. Skull specimens show that the formation of this dinosaur's crown is similar to that of other related hadrosauridae dinosaurs.

"This specimen is a wonderful example of how amazing creatures evolved from a single ancestor," said Joe SETIC, head of the dinosaur team at the Denver Museum of nature and science who discovered the skull.


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