The Pros And Cons Of Brachiosaurus

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.

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

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.

Marsh, named and described a new species of sauropod named Apatosaurus with a description based upon little else but a few vertebrae and part of a pelvis in 1877. Later Marsh hastily named another sauropod Brontosaurus also that was based upon incomplete material, even after more of the skeleton was recovered, he ended up presenting a full reconstruction of this sauropod. Later however in 1903, Elmer Riggs, which was another paleontologist showed that the bones of Brontosaurus and Apatosaurus belonged to the same dinosaur. After this the name Brontosaurus was stricken from records until recently when it has been proposed to bring Brontosaurs back (Tschopp). In fact there was another error that some paleontologists suspected, however haven’t been able to prove wrong. It seems as if Marsh also made the mistake of using the wrong head on a dinosaur. He ended up giving his skeleton of Brontosaurs the skull of another sauropod named Camarasaurus (Othniel C.

The reading and the lecture are both theories of why dinasours were endotherms or cold blooded aninmals. Whereas as the author of the reading states that there is not enough evidence to assume that dinosaurs were endotherms. The lecture casts doubt on the main points made in the reading by providing three reasons.

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

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

Like other Brachiosaurids, it had chisel-like teeth, its nostrils were on the top of its head, and it had large nasal openings indicating that it may have had a good sense of smell. Brachiosaurus had 26 teeth on its top jaw and 26 on the bottom for a total of 52 teeth towards the front of the mouth.

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.

The passage discusses three possible theories, based on the evidence from their fossils, which might account for Agnostids lifestyle. The professor, however, believes that none of these theories are strong or accurate enough to rely on. The professor's arguments to oppose each of these proposed theories are as follows.

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

Speaker implies that some of the evidence is against this paper. Although the paper implies that dinosaurs are endotherms by giving the examples of polar dinosaurs, leg position and h Haversian canals the speaker use these examples in reverse when she states that "most of the scientific research are against this paper''. Initially, she says, it is true that dinosaurs were living in the polar place, but there are several possibilities that can support they are not endotherms, for instance, they could migrate on the cold seasons or they might hibernate. Also, she implies the position of the legs are not a good reason for being an endotherm because she thinks the position of their legs could help them deal with their larger size or could assist

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

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.