Dinosaur World

Amazing Characteristics Of A Dinosaur.

Amazing characteristics of a dinosaur as regards to their important roles have been research and attained. These magnificent creatures also had things that made them magnificent, whereas these characteristics are also commonly seen in the animals of today.

Amazing Characteristics Of A Dinosaur: Crushers (Teeth)

Dinosaur teeth tell a fascinating story. They come in all shapes and sizes and show what a dinosaur ate and how they ate it. Killing teeth, tearing teeth, plucking teeth, grinding teeth- all worked to suit the diet and lifestyle of the dinosaur they belonged to. Dinosaurs were constantly replacing teeth throughout their lives. This is something reptiles and some other animals still do today. The plant eaters ground down their teeth with their endless chewing and meat eaters left teeth in the corpses of their victims.

T- rex. crushers.

As you might expect, the carnivore tyrannosaurus rex had a skull of ferocious bone- crushing and flesh- tearing teeth. Other top predators in the dinosaur world had teeth with many similar features. The sharp, cone- shaped spikes were ideally suited to the task of killing and eating the hadrosaurs and Ceratopsians that they hunted. Designed to aid tyrannosaurus in a quick kill, the curves teeth would sink further into struggling prey, making escape or fighting back even more unlikely and maybe even impossible.

The teeth were attached to a heavily- built jaw that was over 1.2 meters long. The jaw was even hinged at the top of the skull to allow the snot to tilt up and down. This would absorb the shock of the first killing bite and allow the tyrannosaurus rex some flexibility while feeding. The jaw had some give at the side too and could bulge out, to accommodate a particular large mouthful of meat. Tyrannosaurus rex shared many features of its teeth with another terrifying predator- today’s shark. Not only were the teeth replaceable but they were serrated, like a kitchen carving knife. This was particularly useful when it came to tearing off huge chunks.

Ceratopsians such as triceratops probably benefited from the most efficient plant- eating apparatus. Well-muscled jaws like these could cope with a wide variety of plant food, from the toughest cones and branches to the more succulent and easily digested flowering plants. There was certainly plenty of choice in the triceratops habitat- the upland forests of North America. The front part of a jaw, a parrot- like beak, was designed for cutting. Behind the beak were hundreds of sharp, interlocking teeth, which moved up and down like guillotine blades, slicing up vegetation as the triceratops chewed. Its large muscular tongue would push its food between its cheeks and teeth, before swallowing and further digestion in the stomach.

Amazing Characteristics Of A Dinosaur: Skin, Hexagonal  Scales, Lumps And Bumps.

 We can take a good guess at what sort of shape dinosaurs were from the bones they left behind. Put together, like a huge jigsaw puzzle, the bones also tell us how big were. But what did they look like on the outside? Although we can only guess at their colour, we do have a little more idea about what their skin was like. Over the years, some remarkable fossils have come to light, which have preserved the texture of dinosaur skin. They show quite clearly that dinosaurs had a scary reptilian surface, much like the hide of a crocodile today. But a few skin imprints on mud that has turned to stone can never tell the whole story- especially in a class of animals as wide- ranging as the dinosaurs.

Because they are so delicate, fossil skin impressions are very difficult to find and preserve. We also have no idea at what stage of an animal’s decay the impression was made. An imprint could be anything- from a dinosaur that died and preserved almost immediately- to one that was shriveled and dried up like an Egyptian mummy. As might be expected, the skin that has been found shows many variations. Some skins have horny spines and bumps among the scales. Others have a warty texture. These extra patterns would have helped to toughen a dinosaur’s outer layer.

Hexagonal scales.

Dinosaur skin was first discover n the mid- nineteenth century and the first sample to come to light was sauropod skin. 

amazing characteristics off dinosaur. skin

It took several years for scientists to realize that it belonged to a dinosaur, rather than a giant crocodile, which was what they thought at first. When they were first pieced together in museum models and as illustrations in books and magazines, people thought that the huge sauropods would have smooth, scale less skin, like that of other large animals today, such as whales and elephants. But the reptilian, hexagonal scales on the sin clearly showed that this was not the case. More recent fossil finds suggest that some sauropods may also have had spines along the skin of their backs, like the fringes on iguanas.

Lumps And Bumps.

Fossil skin samples of a ceratopsian called chasmosaurus show that, not only does it have scales, but it also has bumps placed among them. These bumps, known as tubercles, would add an additional protective covering to the hide and may have been more numerous around vulnerable areas of a dinosaur’s body such as the neck, thigh and tail. The scales on ceratopsian skin samples have been found to be much larger than scales on iguanodonts, for example. The larger scales would have made the hide thicker and given the dinosaur more protection from the claws and teeth of predators. Some scientists think that the extra lumps and bumps on dinosaur skin were to give them a greater overall surface area. Because there was more of the body to lose heat from this would have helped them to stay cooler when it hot.

Amazing Characteristics Of A Dinosaur: Dinosaur Blood

All animals are either warm or cold blooded. Cold blooded animals such as reptiles have bodies which are a warm or cold as their surroundings. Warm and cold weather affects them more then warm- blooded animals. If they are too cold, they become slow. If they are too hot, they dry up and die. Warm- blooded animals, such as birds and mammals, burn up food to make their own heat in their bodies. They have to stay the same temperature, no matter what their environment is like. There are advantages and disadvantages to both systems. For examples, warm- blooded animals tend to be more active but have to eat all the time to keep their bodies going. Cold-  blooded animals can make a meal last for weeks. There has been a great deal of discussion about whether dinosaurs were warm- blooded or cold- blooded. No one knows for sure. Dinosaurs themselves could be so completely different as it is entirely possible that some these ancient creatures were warm- blooded and some were cold- blooded.

amazing characteristics of a. dinosaur. Chasmosaurus

Amazing Characteristics Of A Dinosaur: Warm- blooded theory

This Dromiceiomimus stalks the forests of Alberta, its keen eyes straining in the dark, looking for any unwary lizard or scurrying mammal foolish enough to think that night- time was a safe time to venture out. Night hunters, such as Dromiceiomimus, provide one of the arguments for dinosaurs being warm- blooded.

Amazing characteristics of a dinosaur

The lower temperatures at night would make it much more difficult for a cold- blooded animal to move with any speed and agility. It is the dinosaur’s fleet- footedness, more than anything else, which many people believe that they warm- blooded. Supporters of this theory also point out that dinosaurs’ hearts were similar in structure to other warm- blood animals, such as mammals. Finally, they say that birds, who are direct descendants from dinosaurs, are warm- blooded too.

 

Amazing Characteristics Of A Dinosaur: Cold- blooded theory.

When dinosaur remains were first discovered in the nineteenth century, their similarity to cold- blooded too. When it was discovered that dinosaurs evolved from animals who were unquestionably cold- blooded, this argument held even more weight. Other supporters on the cold- blooded side, point to the stegosaurus and its massive back plates. Cold- blooded creatures need to bask in the morning sun before they are warm enough to move around. It has been suggested that these plates were built in temperature control devices.

Turned flat to the sun, they would absorb heat rapidly, letting the stegosaurus quickly reach the correct temperature. When the stegosaurus was too hot, the plates could be turned away from the sun and even aligned in the direction of a cool breeze, to take heat away from its body.Yet another argument suggest that dinosaurs could still have been as active as they were and been cold- blooded, because they lived in a much warmer climate than we do in our world today. Because they were so huge they would have kept their body heat much longer than smaller animals. So they could have remains lively when it was colder even though they were cold- blooded.

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