The Pros And Cons Of Brachiosaurus

The reading passage proposes three theories which support the idea that a dinosaur which is called edmontosaurus survived in the winter by migrating to the south, the more hospitable region than the extremely cold in the North Slope. However, the professor in the listening respectively contradicts each theory in the reading passage by using strong evidence as support.

In marine mammal biology a large portion of the study is dedicated towards the study of adaptations to the marine environment. By comparing the anatomy between marine mammals and terrestrial mammals scientists can better understand evolutionary history of how these two categories of mammals diverged from one another. The purpose of this lab was to study the anatomy of different marine and terrestrial mammals and compare their similarities and differences in homologous traits and how adaptations were made specifically for marine mammals to survive the aquatic environment. To accomplish this bones of different species of animals were studied since these structures serve as the basis for comparison across species as well as an indicator of each animal’s individual morphology and physiology. A standard measurement protocol for bones of particular regions of the skeleton was established with emphasis on length versus width ratio as well as it’s overall size relative to its more complex features, i.e. humerus length versus hand length.

At first, the reading passage posits that the diet for these dinosaurs proves that they had to migrate to find plants. Conversely, the professor refutes this point by imparting that this ratiocination is invalid on the ground that there was in some period a warm climate in this area. According to the professor, the 24 hours sunshine eventuated in warm weather and extensive daylight would provide a desirable environment

Sedimentary rocks interpret dinosaur habitats through encased environmental structures of the past. Through sedimentary rocks, paleoecologists’ can examine the arranged formation of sedimentary structures to specify what type of environment the dinosaurs’ lived in. An example of a specific sedimentary rock structure can be seen through formed weathering and ripple marks by how wind and sand formed distinct patterns in the past layered sediment. These arrangements provide interpretations on the structure of the sediment and the habitat of encased fossils, through modern day comparisons

According to Holmes, the Time of the Giants begins by looking at the geological and its ecological conditions which creates opportunities for the expansion of dinosaurs in the Middle and Late Jurrasic Epochs. It describes widespread changes to ocean and land enviroments, including worldwide climate changes that served as catalysts for the spread of the jurassic “giants”: the dinosaurs. The book explores the broad ranges of the largest and biggest of all land animalsand tells the discoveries and changing scientific images of the early so-called “giants” over the past one hundred fifty years. By the end of the Jurassic Period, several evolutionary trends were in motion that would be played out by the giant creatures, dinosaurs, in the next

The author and his colleagues chose to focus on 375 million year old rocks in their search for fossils because amphibians that look dissimilar to fish were discovered in 365 million year old rocks, while fish without amphibian characteristics were discovered in 385 million year old rocks. Thus, it is possible that the evolutionary intermediary, or the “missing link” between fish and amphibians, would be discovered in 375 million year old rocks, between the two time periods. The rocks examined were sedimentary in composition, as the gradual and relatively gentle formation of sedimentary rock under conditions of mild pressure and low heat are conducive to the fossilization of animal remains. Sedimentary rock is also often formed in rivers and seas, where animals are likely to live. This site provides a resource that describes means by which fossils are formed and how the fossil record may be interpreted, and shows some examples of fossils demonstrating evolution through geological periods: http://www.fossilmuseum.net/fossilrecord.htm. In 2004, Shubin and his colleagues were looking for fossils on Ellesmere Island, in northern Canada. This location was chosen because of its lack of human development, as well as of obstructing natural formations and life forms such as trees, which

The reading argues that the distinction of megafauna was because of three reasons.However,the professor in the lecture states that although the points in the lecture were true,but reexamination of the these points lead to a new conclusion.the professor opposes the three points made by the author in the reading about the extinction of the diprotodone.

The huge long necked dinosaur looked, lived, and ate like no other dinosaur. An average adult is 20-25 meters long, and weighs about 30,000-35,000 kilos. The Brontosaurus has a hunched appearance due to his forelegs being shorter than the hind legs. It’s long neck is flexible, and has a downward inclination, to balance out the huge tail that is thick on the top, and skinny on the bottom. Scientist originally thought that they lived in water or in swampy areas due to the nostril slits on the top of the head, but it was proven wrong. They actually live

Fossils of the seed fern Glossopteris are found across all of the south continents. These seeds are too heavy to be carried away across the ocean by wind. Mesosaurus fossils are found in South America and South Africa. Mesosaurus is a creature that could swim, but only in FRESH water. Cynognathus and Lystrosaurus were reptiles that lived on land. Both of these animals could not swim at all. Their fossilised parts have been found across South America, Africa, India and Antarctica.

The detractors of “Nonavian Feathers in a Late Triassic Archosaur” believe that the feather-like impressions in the fossil are not even feathers at all. Based on the angle and shape of the imprints, many paleontologists believe that they were left by ‘highly modified scales’, or possibly even ferns that had fallen on the animal’s body after death.4

In this article scientists are in one of the richest fossil sites in the world, the Sahara desert. They discovered one of the largest known predators to ever walk the earth, and scientists believe the dinosaur was also a good swimmer. This dinosaur

The reading and the lecture discuss weather the migration hypothesis is true for the edomontosaurs- the elephant like dinosaurs to prove the North Slope as their habitat. The lecturer puts forth three aspects, each of which has casts doubt on the three points presented in the reading passage.

These techniques led to the discovery of the boundary between the two eras. A single thin layer of clay found within predominantly limestone rocks established this. By comparing the marine life found in, above, and below the clay, the marine life, like the dinosaurs, had been terribly affected by the extinction event. The percentage of life in the upper layers was dramatically lower than that in the lower. This was far more compelling than what was suggested by dinosaur’s fossils.

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.

The evolution of structural support as observed in the transition to land in fish, amphibians, and minks can be compared to that of mosses, ferns, and flowering plants. Much like fish, mosses do not need much support. As earlier forms of life (animal and plant), they did not develop a strong structural support against gravitiy, however, considering that these two organisms are still around, it appears that this is not a hindrance. As amphibians evolved from fish, so did ferns evolve from moss. These two organisms need more structural support than their ancestors. Both of these organisms spend more time out of the water than their ancestors which means that they need some form of structural support to hold them up against gravity, but their