Synapsid Essays

Thesis Statement: What makes a mammal a mammal? What makes a mammal a mammal? Well, mammals are a group of animals that have hair or fur and backbones. They have four-chambered hearts and they are warm-blooded. Mammals also feed their babies with milk from their bodies. Mammals have existed for the past 200 million years. They can live in places with hot and cold conditions because they can regulate their own body temperature and it normally remains about the same their whole lives. For the past

In the story “The Earth on Turtles Back” it explores a very nurturing and unique way that the earth was created. The original idea was brought on by the Native Americans but is retold by the authors. It explores the idea that animals and dreams helped start the building of earth. Within the story you find some very shaping and well-fitting themes. The themes with in “The Earth on Turtles Back” are one thing must end for another to begin, importance of animals, and belief in dreams. To begin,

Prosimian suborder primates are characterized by their prominent noses and long queues and, in some species, by a tendency to lateral arrangement of the eyes. It was formerly included the Lemuriformes, Chiromyiformes, Lorisiformes and Tarsiiformes; these four show no characteristic justifying its session under the same taxon, so Prosimians are considered today as a group. The definition of prosimian in the Castilian dictionary is it is said of certain nocturnal primate mammals, small, with teeth

A ‘living fossil’ has been determined as ‘an organism that has remained essentially unchanged from earlier geological times and who’s close relatives are usually extinct’ (Merriam-Webster, 1859). This is suggesting that the Duck-billed Platypus, more commonly known as the Platypus, would still be in its primitive form and have similar characteristics to it ancestors. Anyone looking at the Platypus can identify its abnormalities as it is so distinctively unique in the animal kingdom. Its name on its

Millions of years ago, peculiar beings ruled the Earth. The Earth back then looked very different from what we call “Earth” in the present day. Even though the world fauna had been drastically changed from that which had been seen in the Paleozoic, that was not the only major occurrence. The Mesozoic era is sometimes called the age of reptiles. Mesozoic means “middle animals”, and dinosaurs were conceivably the most typical organisms in the Mesozoic. The Mesozoic is sectioned into three periods:

Introduction – Mammals are the dominant large unique group of animals having a number of morphological and physiological characteristics. They evolved from a group of reptiles called the synapsids. These reptiles arose during the Pennsylvanian Period (310 to 275 million years ago). A branch of the synapsids called the therapsids appeared by the middle of the Permian Period (275 to 225 million years ago). It was over millions of years that some of these therapsids evolved unique mammalian features

Lack of immediate burial in sediments or on the sea bottom after the organism has died, be it an animal or vegetal organism, is the most important barrier for preservation of the organism. Physical, chemical and biological decomposition has to be avoided in order to obtain well preserved and complete fossils. The fossils provide information about the history of life of the organism on earth, what the organisms looked like, where and when they lived, how they lived and evolved. Fossils are the preserved

1. Darwin Theory of Evolution helped come up with the conclusion of natural selection and shared ancestry. Meaning that all species arise and develop through inherited variations, increasing the species ability to survive, reproduce, and compete. The primary example for this theory was his findings of the finches on the Galapagos island. He noticed that these finches were similar to other species that were on different islands. This helped him make up the following conclusions; Evolution has occurred