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Protecting endangered species research paper
Protecting endangered species research paper
How to protect endangered animals
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The evolution of the elephant specie initiates the modification in the genetic traits of an elephant through sequential generations; hence the independent species divided into separate divisions. The subspecies therefore evolved and developed independently, and ultimately expanded and branched out to form advanced species, resulting in the formation and evolution of the modern elephant specie. The current elephant is a large herbivorous mammal, native in Southern Asia and Africa. The elephant species is the largest existing land animal, belonging to the family Elephantidae, and the order of Probiscidea. The elephant is characterised by the possession of a versatile trunk, capable of grasping objects and ivory tusks.
The evolution of the elephant specie arose within the Eocene and early Oligocene age, dating back perhaps 60 million years earlier. The earliest proboscideans have inhabited and populated all continents of the world, however with the slight exclusion of both Australia and Antarctica. The elephant specie encountered five major phases of evolution, the Phosphatherium, Moeritherium, Phiomia, Primelephas and the current evolution stage the modern elephant Loxodonta Africana and the Elephas Maximus, referred to as the African, Asian elephant. The original proboscides established the foundation of perhaps 352 species and subspecies. However due to the immense escalation of human settlement, mass habitat destruction and ultimately illegal poaching, unfortunately only two major species continue to exist within society.
The earliest ancestor of the elephant existed 60 million years earlier. The prehistoric genus Phosphatherium initiated the evolution of the modern elephant specie. Although the primitive mammal is the initial...
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...cumstances led to the formation of a rather short and broad neck, in addition to the modification of the second pair of incisors of the upper jaw into ivory tusks, although the two rudimentary tusks present in the lower jaw remained diminutive.
The physical adaptions adopted by the earliest elephants have led to the evolution of what is now recognised as the modern elephant species. The Phosphatherium, Moeritherium, Phiomia and Primelephas form the evolutionary line of the modern elephant, adapting larger physical structures, such as the skull, bones, limbs, figure and ears. Unfortunately the continuation of the elephant specie is threatened. Humans pose a great threat to the endangered elephant specie and risk the continuation and co-existence of the elephant. The evolution and continual reproduction of the elephant illustrates a significant element in society.
Ceratopsians and Pachycephalosaurs are closely related in their characteristics. Ceratopsians processed a saddle-shaped boney frill that extended from the skull to the neck and typically had horns over the nose and eyes. The most popular was the triceratops, which could reach over 26 feet and weigh in excess of twelve metric tons. Their frills served as two major functions. It protected the vulnerable neck from being harmed. The second major function that the frill provided was due to the fact that the frill contained a network of blood vessels on its underside, which were used as a means to get rid of excess heat. The Pachycephalosaurs were considered to be bipedal. They were also found to have thick skulls, flattened bodies, and tail that were covered in an array of body rods. Pachycephalosaurs were thought to have been more than fifteen feet long and processed a skull that was surrounded by a rounded dome of solid bone. It was thought that they used their heads in combat or mating contests, but that was disproved fairly recently, which I will discuss later in the paper. Both Ceratopsians and Pachycephalosaurs were “bird-hipped” and both of these suborders contained a backwards pubic bone. Both were Marginocephilia, or “fringed heads”, which is one of three clads under the Orinthiscia order. They were also herbivore dinosaurs that inherited their fringe at the back of the skull from earlier ancestors.(2) Their classi...
Not only are giraffes the tallest animals in the world, they are also one of the most recognizable. Their characteristic long necks quickly captivate any audience. That being said, it is not commonly known that there are thought to be nine subspecies of Giraffa camelopardalis. In fact, there is increasing evidence that these could potentially be separate species in their own right. This paper will discuss where giraffes fit in the Tree of Life and identify the giraffe’s closest relatives, differentiate and analyze the similarities and differences between the nine subspecies, and, finally, explore any debate revolving around the phylogeny of the subspecies.
The excerpt from Elephants Know When They Need a Helping Trunk is about the exact procedures and results of the same experiment that Elephants Can Lend a Helping Trunk was about. It contains the precise physical dimensions of every part of the test, and detailed explanations of each step that was followed to preform the test. Little to no opinions, quotes, or even conclusions that could be drawn were included, due to the strict, formal, and informational nature of the passage. The author's purpose was purely to explain all parts of the elephant study, and not at all to entertain or persuade.
Each author has the same purpose in writing about the elephant studies and there are many similarities and differences in which the elephants behaved.
All primates have essentially the same kinds of specialized mammalian teeth adapted to eating a wide variety of foods. Beginning at the front, each quadrant of the mouth has 2 incisors, 1 canine, and varying numbers of premolars and molars. The incisors are used like scissors for nipping off pieces of food. The pointed canines are for piercing and tearing. The premolars and molars, with their cusps, are used to grind and smash food. In platyrrhine species, there are 3 premolars and 2 or 3 molars. This results in a dental formula of 2.1.3.2 or 2.1.3.3. In contrast, all of the catarrhines have 2 premolars and 3 molars, making a dental formula of 2.1.2.3. The chimpanzee shown below is an Old World anthropoid species and, therefore, has a catarrhine dental formula.
Scientists had some idea to the evolutionary process of whales. “It has always been clear that aquatic cetaceans must have evolved from terrestrial mammals and returned to the water, and the forelimbs of recent cetaceans still have the same general pattern as that of land mammals.” (Walking with Whales) It was known fact that land mammals and whales were related. However, the change from ancient whales to modern whales is drastic.
Besides humans, who occupy each continent, majority primates live in tropical regions of the Africa ,Asia and also America(Anon ,1911). They are very different in size from Madame Berthe's mouse lemur, which is only 30 g (1 oz.), whereas the eastern lowland gorilla, is over 200 kg (440 lb.). According to fossil evidence, the early predecessor of primates might have been existed in the late Cretaceous period which was between 145.5 and 65.5 million years ago; an early close primate relative known from ample that still remains is the Late Paleocene Plesiadapis, circa 55–58 million years ago (Chatterjee, Ho, Barnes and Groves ,2009). The primate branch might be even older than first thought, emerging in mid-Cretaceous era which was around 85 million years ago as being suggested by the molecular clock study (Chatterjee et al. 2009).
An English naturalist Charles Darwin (1802-1882) developed a theory of biological evolution. He studied variation in plants and animals during his five years’ voyage around the world in the 19th century. Darwin studied hundreds of species, which he researches variations between locations. His theory states that all species of organism arise and develop through natural selection. Natural selection is the process of organisms that adapt to their surrounding environment, which tend to survive and produce more offspring. Killer whales are remarked to have evolutionary links from land dwelling organisms, millions of years ago. This paper will display the evolution and natural selection of the killer whale.
George Orwell’s “Shooting an Elephant” is a short story that not only shows cultural divides and how they affect our actions, but also how that cultural prejudice may also affect other parties, even if, in this story, that other party may only be an elephant. Orwell shows the play for power between the Burmese and the narrator, a white British police-officer. It shows the severe prejudice between the British who had claimed Burma, and the Burmese who held a deep resentment of the British occupation. Three messages, or three themes, from Orwell’s “Shooting an Elephant” are prejudice, cultural divide, and power.
The origin of modern day whales, a mystery that has puzzled paleontologists for years, may have just been solved with the discovery of an ankle bone. This discovery might sound simple and unimportant, but the bones of these ancient animals hold many unanswered questions and provide solid proof of origin and behavior. The relationship between whales and other animals has proven to be difficult because whales are warm-blooded, like humans, yet they live in the sea. The fact that they are warm-blooded suggests that they are related to some type of land animal. However, the questions of exactly which animal, and how whales evolved from land to water, have remained unanswered until now.
The common name is the African Elephant, the scientific name is Loxodonta Africana, the phylum is Vertebrata, the class is Mammalia, the order is Proboscidea, and the family is Elephantidae. The Closest Relatives to the African Elephant are: the Asian Elephant, mammoths, primitive proboscidean (mastodons), sea cows, and hyraxes. Scientists believe that the African Elephant evolved from one of its closest relatives, the Sea Cow. The geographical location and range of the African elephant covers all of central and southern Africa. In Ethiopia there are isolated populations that exist around Lake Chad in Mali and Mauritania. Also in Kenya, Rhodesia, Tanzania, Zambia, Uganda, Zaire, and in National parks located in South Africa, as well as several other countries. African Elephants, originally, were found in all of the Sub-Saharan African habitats except desert steppes. Elephants still occupy diverse habitats such as: temperate grassland, tropical savanna and grass lands, temperate forest and rainforest, tropical rainforest, tropical scrub forest, and tropical deciduous forest despite their drastic decline in numbers. However, their migratory patterns and habitat use have changed, due to the fact that they are restricted to protected areas. The elephant can exist in many types of environments but it prefers places that have many trees and bushes, which the elephant needs both for food and shade. They also like warm areas that have plenty of rainfall.
Much of the debate over whether species should be separated into different groups arises from the morphological differences between individuals of the same species. For example, Australopithecus Afarensis fossils express high sexual dimorphism, which proposes two individual species (Reno et al., 2003). While Australopithecus Africanus, in comparison, shows more realistic size ratios between males and females suggesting one species (Lockwood, 1999). A study performed by Richmond and Jungers looked at the size variation in Australopithecus Afarensis compared to living hominoids to answer the following question: whether it is possible to see such high differences in size between genders of the same species or whether it makes more sense to divide the species into two (1995). In this study, a conclusion of two separate species for the Australopithecus Afarensis was made based on comparisons of fossils such as the humorous and femur with modern gorillas (Richmond & Jungers, 1995). This study compared the size of postcranial fossils. While most of the research has focused on making interpretations based on only cranial fossils, research by Harmon agrees that by looking at postcranial evidence we can gain better insight into the real variations between and within species (2009). Most research assumes high dimorphism wi...
Gould, Edwin, George McKay, and David Kirshner. Encyclopedia of Mammals. San Francisco, CA: Fog City, 2003. Print.
Cohn, Jeffrey P. "Do Elephants Belong In Zoos?" Bioscience 56.9 (2006): 714-717. Academic Search Premier. Web. 24 Mar. 2014.
The world we live in today is full of an exceptional variety of animals. The time it took to conclude to the various sorts of species seen today has been throughout a period of millions of years. The vast majority of these animals are accredited to evolutionary advancements. When the environment changes, organisms have become accustomed to changing to fit their environment, to ensure their species does not die off. These physical changes have resulted in different phyla, ranging from basic structures, like sponges to advance systems, like that of an octopus.