Sauropod Dinosaurs With Their Heads Held High – The Debate Continues

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Sauropod Dinosaurs With Their Heads Held High – The Debate Continues

A New Report into the Physiology of Sauropods

The Sauropods, or to give them the correct taxonomic classification – Sauropoda, are long, elephantine plant eaters, part of the Saurischia (lizard-hipped) group of Dinosauria (dinosaurs). These animals are said to be the largest land animals of all time, with some of these creatures such as Brachiosaurus and Titanosaur, Paralititan reaching a length of over twenty five meters and probably weighing more than metric tons. fifty. They are the largest land living vertebrates of all time.

Discuss How These Animals Hold Their Necks

How these giant creatures got their long necks is the subject of much debate among palaeontologists. In the past, we believed that these animals were able to hold their necks very high, almost vertically in what has been described as the “swan neck” position, but now many scientists are convinced that this place. Indeed, this interpretation of Sauropod fossil bones is not very favorable, with the view that these animals were so large that they had to live in water in order to support their enormous weight.

A More Traditional View of Sauropods

The view that these large creatures lived in swamps and lakes, so that the water could help support their weight has been largely debunked, but the debate over how these animals used their necks continues. A study has just been published in the scientific and educational journal “Biology Letters” that examines the effect of the position of the dinosaur’s head in relation to its heart and implications for blood pressure.

Crocodile Provides Evidence

Extant reptiles such as crocodiles and lizards have an anatomical structure that is very different from that of dinosaurs. Living beings standing in their natural state have their heads almost level with their hearts. They could certainly hold their heads up, but no living thing had a very long neck or the stance of a sauropod like Brachiosaurus. The hearts of modern predators are different in shape from the human heart. They cannot separate pulmonary (blood to and from the lungs) and systemic blood (blood that circulates throughout the body), they do not have a fully divided, chambered heart. Most dinosaurs, from the smallest Theropods such as Compsognathus to the giant Brachiosaurs, carried their heads above their hearts. This means that their hearts are fully divided ensuring that there will be enough blood pressure to pump blood to their elevated heads.

Australian Scientists Discover Dinosauria

This new study, led by Dr. Roger Seymour, an evolutionary biologist from the University of Adelaide, shows that a dinosaur’s head would have been higher than its heart and that raising the head and neck would have increased blood pressure – to levels you can kill. . This group argues that in the case of Sauropods, for example, these large herbivores would not feed on the branches of tall trees, but eat like cows keeping their heads and necks on the ground. The scientists found that the physical effort involved in lifting such long necks, some of which could measure more than fifteen meters in length, would have used almost fifty percent of the energy came from Sauropod food simply to spread blood.

Commenting on his research Dr Seymour said that the large necks of the gigantic Sauropod dinosaurs are generally thought to have been used for browsing to help these giant creatures get food. However, from an anatomical perspective is a high neck posture possible?

Scientists calculate the required energy by comparing the metabolic rate of dinosaurs, blood flow and blood pressure. The research team concluded that their studies showed that a large, plant-eating Sauropod would have to use only half of its energy to circulate the blood needed to pump the blood vessels up to the brain with a vertical neck. The blood pressure would have to be very high in these reptiles.

In their conclusions, the team has related the results to the potential lifestyles and feeding habits of Sauropods. Instead of letting them roam the tops of the trees, they say many would have fed down to the ground feeding on plants close to the ground instead of from the tops of the trees. The team concluded that most sauropods may not have raised their heads higher than their shoulders.

Sir Richard Owen Explores the Anatomy of Dinosaurs

This article contributes to the debate on the structure of dinosaur hearts and the resulting implications for metabolic rate and endothermic organisms. Sir Richard Owen commented on the fact that the dinosaurs may have led “more dynamic lives” than the existing predators in 1841. He concluded that they must have had a fully divided mind as animals and birds and it is possible that the dinosaurs may have been warm. – blood with a high production rate.

Sir Richard Owen said that the best dinosaurs according to the posture of the land were more likely that their minds were more complex than those of modern creatures such as crocodiles, snakes and lizards. Sir Richard, although writing in the 19th Century was convinced that the hearts of dinosaurs were like those of endothermic, highly active creatures like animals and birds. About 70 years later, many scientists agree with these conclusions. Dinosauria were active animals and most of them were probably warm blooded.

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