Synamorphies Of Dinosaur Essay

In the website http://nationalgeographic.org/media/pterodactyl-fossil/ they said quote “Pterodactyls were not dinosaurs! Dinosaurs are generally considered to walk upright, on either two legs (like T.Rex) or four legs (like stegosaurus). Pterodactyls

The biggest mystery surrounding the dinosaur is how did they die? For over 130 million years dinosaurs ruled the earth. Then 65 million years ago, at the end of the Cretaceous period, they died out.

            At a time, scientists believed all dinosaurs were cold-blooded.  However, with a recent discovery of a dinosaur found with a fossilized heart in the northern part of South Dakota in 1993, many paleontologists are starting to think that there were some dinosaurs that were warm blooded.

Dinosaurs come in many different colors and sizes. The lifespan of a dinosaur is 75 to 300 years. Their daily life is hunting, mating, using the bathroom, and migrating. The defense mechanisms helped them repair their injuries 150 mya. The bone structures are the skull, jaws, neck bones, vertebrae, thigh, pelvis, tail, and rib bone. Dinosaur’s average speed is about 27 mph. Dinosaurs find their food by hunting, which is each other and some eat plants. They reproduce by hatching newborns from eggs. Some communicate by their horns or flickering the tip of their tails. Baryonyx stomach contents were found to contain fish scales, is an example of predator-prey relationship. Some animals that are related to dinosaurs are lizards, because of their skin texture.

For years, many discoveries and assumptions have been made about dinosaurs. All around the world, new dinosaur fossils are found and paleontologist continued to be baffled and amazed at the traits these creatures possessed. Naturally, researchers ask questions about the newly-discovered fossils. Was this dinosaur aquatic? Is it a herbivore or a carnivore? Did it take care of its young? There are many theories based on the appearance of fossils and what they can tell us by studying the modern day animals. Basically, it all comes down to what can the physical traits of these dinosaurs tell us about its behavior? In my research, I analyze articles about the different traits that three of the carnivorous dinosaurs; Giganotosaurus, Spinosaurus, and T-Rex possessed that made them seem like the top hunters of their time period. I researched how each of their unique attributes could have affected their behavior and how that could have played a role in their environment. Although, Spinosaurus, T-Rex and Giganotosarus have been known as the apex predators of their time period, their behavior is mostly assumed by what their traits tell us.

Jurassic Park by Michael Crichton demonstrated many dinosaur characteristics and behaviors. The dinosaurs were fictionally characterized to appeal to the readers. By examining the dinosaur’s appearance and behaviors of dinosaurs such as the duckbilled dinosaur, velociraptor, hypsilophodontids, dilophosaurs, Triceratops, apatosaurs, Tyrannosaurus rex, stegosaurs, and maiasaurs distinguished whether the evidence existed in the field of paleontology. The behaviors and characteristics of the dinosaur are divided into three factors as behaviors that were supported, not supported, and no evidence to support or refute the behavior.

Females for the nourishment of the young could define a mammal as a warm-blooded vertebrate animal of a class that is distinguished by the possession of hair or fur, the secretion of milk. The roots of the mammalian line reach back almost 300 million years. Some of the very early mammal relatives dominated the landscape millions of years before dinosaurs appeared, and most of these species became extinct. During the age of dinosaurs, most mammals were not much bigger than small rodents. It was after the extinction of the large dinosaurs that the great diversity of mammals arose. The timeline in this hall displays the development of such key mammalian physical features as the synapsid opening in the skull, a large hole behind the eye socket

The author is Michael Crichton, and the book is The Lost World. Many people have read this book, along with its predecessor, Jurassic Park, and many people have been enthralled with the thought of living dinosaurs in the 20th century. “What if the dinosaurs did not become extinct? What if they still exist?” (The Lost World takes off a couple years after the first book. A separate island is discovered, an island where the dinosaurs were actually created. There are two different research groups sent to the island. One to observe the dinosaurs in the wild and the other to bring them back for research purposes. The fighting starts from there. What many people don’t know, is that these books, along with countless other

Nature is often conceptualised in opposition to culture, and yet in practice they are inextricably linked. Discuss the ways in which images of nature within visual culture (art, design, cinema, etc) position nature in relation to a variety of urban themes. Intro: 800 words: Introduce the subject: Nature [noun]: The phenomena of the physical world collectively, including plants, animals, the landscape, and other features and products of the earth, as opposed to humans or human creations ~ Oxford dictionary.

A team of researchers at Liverpool University have found new evidence that suggest previous estimates of the Tyrannosaurus Rex biting power was greatly underestimated. The team, led by Dr Karl Bates, has predicted that the dinosaurs jaw could snap together with a force of 13 000 pounds or 57 000 Newtons, far exceeding previous researchers findings.

It can be a fun and stimulating information when you are scanning for dinosaur fossils, for instance, bones and eggs. Territory is the huge criteria to make sense of fossils and if you are at the unequivocal place and know not the bone then there is an open entryway for you to get reward by a bone of a soonest creature.

It was hypothesized that the the two theories in the article had both happened at the same time. Each theory came with a tentative temperature drop or rise that estimates what would have happened if the asteroid/volcano happened. They say we need to superimpose the two to get what would have happened if they both occurred. However, these two temperatures contradict one another. It was said that the volcanic eruption would have caused the temperature to rise, while the asteroid would have caused the temperature to drop. I haven’t done the math, but it seems to me that these together might make the temperature remain around normal, meaning the temperature couldn’t have affected the number of dinosaurs on the Earth.

Rapid climate change also ends up on the suspect list of possible dinosaur extinction events. During the latter part of the Cretaceous Period continents broke up causing volcanoes to erupt and fill the sky with gas and ash resulting in a drastic climate change (“Dinosaurs Climate Change and Biodiversity”). The shifting of continents changed the Earth’s landscape, altering weather patterns and overall climate (“Dinosaur Extinction Theories”). Also, over a long period of time, climate gradually changed. Ocean habits changed, temperatures grew much more extreme causing scorching summers and frigid winters (Norell, Dingus, and Gaffney). Radical temperature changes like these led to a green-house effect, making life for the dinosaurs a lot

All three of the dinosaurs contain some type of beak with tooth sockets. The three had different lineages that lost their teeth during their young years and developed a beak this means that the teeth could or could not have functioned or had purpose. Along with this the team hypothesized that the process of teeth loss is connected to the development of a beak for the dinosaurs. To test their hypothesis they put together a statistical analysis of diverse, modern vertebrates to understand the characteristics of the development of beaks for

Dinosaurs are divided into two major groups based on their hip structure, the Saurischia (lizard-hipped) and the Ornithischia (bird-hipped). In