The Age Of Mammals

What makes a primate a primate? A primate is defined by its many incredible features. A primate is a mammal that has certain characteristics such as: flexible fingers and toes, opposable thumbs, flatter face than other mammals, eyes that face forward and spaced close together, large and complex cerebrum, and social animals. What makes a primate a primate is its characteristics. Some of the physical features primates are identified by is their teeth, snouts, eyes, ears, arms, legs, fingers, and toes. Human evolution is a big part of humans being primates, and having similar features and characteristics make humans to be considered to be a primate, but both humans and non-humans have differences.

The Paleolithic Period is the earliest time period man has been alive, and the longest of the Stone Age's. It dates from 2,000,000 B.C to 10,000 BC The people of the Paleolithic Period lived simple lives, which consisted primarily of survival. Man's life was simply to hunt, eat, and survive, while the woman's job was to gather and watch over the children.

     The Paleolithic Period is the earliest time period man has been alive, and the longest of the Stone Age's. It dates from 2,000,000 B.C to 10,000 BC The people of the Paleolithic Period lived simple lives, which consisted primarily of survival. Man's life was simply to hunt, eat, and survive, while the woman’s job was to gather and watch over the children.

Recent evidence suggests that whales may not have always inhabited the oceans. Bones of an ancient ancestor of modern day whales, the Basilosaurus, were discovered in Pakistan that suggest whales evolved from a wolf-like creature. This genus of an early whale lived 34-40 million years ago in the late Eocene. These fossils show many different features in common with both modern day whales and modern day land mammals. Since the discovery of these bones, many other evidences show that whales are a likely descendant of the Basilosaurus through many different ways, such as embryologic comparison and DNA testing. Whales aren’t the only suspected descendants

All mammals have hair and mammary glands which is what separates the group from others. However most modern mammals are also distinguished by a single dentary bone, the mandible, and most have two or more types of teeth. Also, most mammals have sweat glands.

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.

90. Mammals are members of a class of reptiles characterized by pressure of hair and

The first primate like mammals should that they started to evolve in the early Paleocene Epoch and the beginning of the Cenozoic Era. The primates were roughly similar to squirrel and tress shrews in the size and appearance. Fragmentary fossil evidence that was found in Asia, North Africa, and in North America suggest that the primates have adapted a arboreal way of life in the warm, moist climates. The fossils show that these primates had a great sense of eye sight and good hand and feet coordination for climbing trees. With the end of the Eocene Epoch many of the

From the trees to the grasses to the microbes to the animals, all life on earth is interconnected. Just as the trees are connected to the microbes in the dirt, the climate is connected to every living thing on this planet. The success of animals has always depended on the success of plants, known as the producers in the food supply chain. The changing climate has had a powerful effect upon evolution, including the evolution of primates. This essay explores the proliferation and the demise of primate species from the Paleocene Epoch to the Miocene Epoch by comparing and contrasting the physical and behavior differences between the primates of each period and how the ecological conditions of the period allowed for their selection.

Hippos are large and aquatic, like whales, but the two groups evolved those features separately from each other. We know this because the ancient relatives of hippos called anthracotheres (not shown here) were not large or aquatic. Nor were the ancient relatives

There are so many interesting things about them. Dolphins have been around for about 15 million years now. They’re extremely intelligent, probably even more intelligent than us humans. Dolphins are becoming endangered because of humans and many don't know that. They are known as the oceans most kind animals.Dolphins have originated millions of years ago,are extremely endangered,and are becoming endangered.The most important thing to know about dolphins would probably be how they originated because without that those cute aquatic mammals wouldn't even exist.

The earliest fossil of the primate can go back before the extinction of the dinosaur over 65 million years ago. Bones and teeth were discovered in Montana and Wyoming (Park, 2008). Even though there was primate like evidence before the dinosaur extinction, (Shipman, 2012).

Jurassic is a period of time with Dinosaurs, rodents and birds. There were also island seas consisting of sharks, sea monsters and blood-red planktons. The existing plants in that period were cycads, ferns and conifers. The Mesozoic era was about 245 million years ago to 65 years ago, so it almost lasted about 180 years in total. The Mesozoic era is divided into three periods of Triassic, Jurassic and Cretaceous. Mesozoic era means middle animals and it is the era, which the word’s fauna has changed from what is in the Paleozoic era and the most famous organisms of this era are dinosaurs. In the Mesozoic era, the extinction of more than 90 percent of species in the earth was observed and the reason behind it was mostly volcanic eruptions and climate changes. On the other hand, this era had massive changes that represented ecological niches and rise to new creatures such as rodent-size mammals and first dinosaurs. In Triassic, which was the first period of Mesozoic, the mammals and first dinosaurs existed. Later than that, the second period was Jurassic, which giant shaped dinosaurs and other kinds of dinosaurs were developed. Besides that the first flowering plants and primitive birds, with long teeth appeared in that era as well.

For decades the age of the Earth has been a major conflict between science and religion, but why is it such a big conflict? If, in the year AD 1600, an individual had asked an educated European how old the planet Earth was and to recount its history, the response would have been that it was about 6000 years old and that its ancient history was given by the biblical account in Genesis (Changing Views of the History of the Earth). If one asked the same question of an educated European in AD 1900, one would have received a totally different answer (Changing Views of the History of the Earth). The answer would have been the Earth was ancient, there had not been a Noachian flood, and that the species of life had not been fixed over the history of Earth (Changing Views of the History of the Earth). In short, Genesis was an allegory and not literal history (Changing Views of the History of the Earth). This brings up the different views between “young earth creationists” and “old earth creationists” and those that support an infinite universe. The problem today is each side contains major valid points of evidence of both biblical and scientific, on the age of the planet Earth.

They say as mammals continued to evolve, they drove the dinosaurs into extinction (“What Killed the Dinosaurs”). “Not only did mammals likely compete with dinosaurs for resources, many species survived the end-Cretaceous extinction and subsequently came to dominate Earth.” (“What Killed the Dinosaurs?”). This is primarily because the early mammals were a lot smaller than the mammals that exist today. “Some of the world's earliest mammals were the multituberculates, a group of small rodent like animals that first emerged on Earth about 165 million years ago.” (Welsh, Jennifer). Scientists predict that any mass extinction event that caused animals to go extinct affected larger animals than it did the smaller animals, such as mammals ("Dinosaurs Became Extinct 'due to Laying Eggs'"). Mammals remained small for almost 100 million years, while they out competed small and baby dinosaurs for food, shelter and resources until they were extinct. Once the dinosaurs were out of the way mammals were able to evolve and grow large in size like the mammals that exist today today (LiveScience). Fossil evidence sheds some light on this theory as well. Fossils of mammals believed to date back to about eighty five million years ago show that mammals began to change rapidly and grow. “This matches up with other mammal groups, including recently discovered species from the Late Cretaceous (between 100 million and 65 million years ago) showing highly specialized