How did scientists get the sound signals of dinosaurs?


Science News Desk – It is not possible to get complete information about dinosaurs only on the basis of fossils. That’s why many things about dinosaurs have not been known yet. This is the reason why till now paleontologists could not find out much about dinosaurs including their neck. But a new study claims that a Cretaceous period dinosaur fossil found in 2005 has provided clues to the sounds dinosaurs made. In 2005, the body of a Cretaceous dinosaur named Pinacosaurus grangeri, belonging to the genus Ankalasaurus, was found in fossil form in the Gobi Basin of Mongolia. The special thing about this fossil was that its neck bones were found completely safe. Which usually doesn’t happen. Scientists could get information about the breathing of that dinosaur.

Now paleontologists from Japan’s Hokkaido University Museum and the American Museum of Natural History have proposed that the throat fossil found in 2005 was actually part of the throat’s voice box, and marks the first time a non-flying bird has been found. Large part of dinosaur’s voice box has been found. Scientists say that despite birds being distantly related to animals, there are many similarities in the larynx of both modern humans and birds. In fact, vocal physiology shows a strange mix of reptile and bird voice boxes. 250 million years ago, the reptile-like creatures on Earth were divided into groups, one called dinosaurs and the other called crocodiles and alligators.

The researchers suggest that ankylosaurs such as Pinakosaurus may have made some similar sounds between these two lineages. Paleontologist Victoria Barbour, who was not involved in the study, told the New York Times that it can be safely assumed that dinosaurs may have had crocodile-like sounds. Barbour says researchers may be working on such basic physiology. Then the birds would have evolved from these and would have found new ways of making new sounds for themselves. The larynx is a kind of hollow tube in the throat through which voice can escape. When air passes through this tube, the tissue folds generate waves with a specific frequency of sound.

Similarly mammals, amphibians and reptiles also make sounds through their windpipes. But here birds are an exception. They have a syrinx attached to the end of the windpipe of the larynx, this can be called a box in the chest in the case of humans. The syrinx consists of two separate pipes, so that they can make two sounds at the same time. Until now, fossilized dinosaur larynxes had not been found in non-flying archosaurs. Pinacosaurus fossils contain ring-shaped cartilages in the larynx called sarcoids, which were larger than living reptiles. The sarcovids of today’s more vocal reptiles are very large, meaning that the size of the cartilage found indicates that there must have been a great deal of vocalization. That is, the sound of Panakosaurus must have been very heavy and loud.

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