New illustration dinosaur Exhaling a puffy cloud may appear to be sucked by an animal. But in reality, the artwork simply depicts a dinosaur breathing on a chilly morning. And it turns out that this dinosaur is breathing differently than previously seen in this group of dinosaurs.
Scientists have found abnormal ribs and sternum in a very well-preserved fossil skeleton. Heterodontosaurus Tucki, Ornithischian dinosaurs that eat turkey-sized plants, or dinosaurs in the hipped roof — groups such as duck beak dinosaurs and frilled dinosaurs Triceratops Armored dinosaurs like Ankylosaurus..
X-ray A study of fossils discovered in the Eastern Cape of South Africa in 2009 allowed researchers to digitally reconstruct the skeleton in 3D. Their model reveals skeletal features previously unknown in ornithischian, and through chest and abdominal dilation, ribs connected by muscles to help animals breathe in novel ways for dinosaurs. Showed the hipbone.
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H. Tucky It measured about 3 feet (1 meter) from nose to tail and roamed today’s South Africa about 200 million years ago. Jurassic According to (200 million to 145 million years ago) Natural History Museum In London.It is one of the earliest species in ornithischian, which means H. Tucky Researchers reported in a journal on July 6 that they could provide clues about the evolution of features that are common to ornithischian dinosaurs but different from other dinosaurs. eLife..
Because H. Tucky The skeleton is almost complete, and paleontologists have discovered a group of small, thin abdominal ribs called the abdominal ribs.These ribs crocodile Viktor Radermacher, a PhD student at the University of Minnesota’s School of Global Environmental Sciences, Minnesota, said other modern reptiles are involved in breathing but were previously unknown to ornithischian dinosaurs. It was.
“Gastralium was thought to be absent in all ornithischian varieties, but it shows that they held them for a very short period of early evolution,” Radar Macher told Live Science in an email. It was. H. Tucky There were also paddle-shaped ribs and an elongated sternum plate that could be moved along with the ribs attached to the sternum to facilitate breathing. Such features are “lost in later ornithischian”, Radermacher said. This indicates that the early members of this group were “doing very different things in their bodies.”
Mammals breathe by expanding and contracting their lungs with the help of an organ called the diaphragm that moves air in and out. Birds, the modern pedigree of theropod dinosaurs, use a different method. In this method, a network of air sacs distributes oxygen by looping through the bird’s lungs and body.Paleontologists who reconstructed the internal anatomy of previously extinct dinosaurs found evidence of similar air sacs, most dinosaurs Breathed like a modern bird, Live Science reported in 2005.
But H. TuckyAnatomy suggests that this dinosaur has a different strategy. By bending the muscles that connect the abdominal ribs to the pelvis, the sternum plate and the paddles of the bones, the dinosaurs inflate their abdomen and chest to inhale air and relax those muscles to push out air.
This type of breathing is similar to that of a particular reptile. Crocodiles breathe using their chest, abdomen, and “really strange muscles,” while lizards breathe with their entire body stretched “sometimes up to the neck.”Pterosaurs flying dinosaur reptile cousins have some bone chest features similar to them H. tucki, He added that he also hinted that the pterosaur might have breathed in his chest and belly. (Pterosaurs, crocodiles and dinosaurs all belong to archosaurs).
Prior to this discovery, some scientists suspected that the ornithischian dinosaurs breathed differently than other dinosaurs.This well preserved H. Tucky The specimen was “a missing part of the puzzle” to confirm that hypothesis, Radermacher said.
Originally published in Live Science.
No, I don’t smoke this dinosaur. I breathed like a weirdo.