relate more closely and accurately to the stratigraphy of the planet: Paleogene for the early part of the Cenozoic including the early two-thirds of the Tertiary Period, and Neogene for the last part of the Tertiary and the Quaternary. Trees, grasses, shrubs and everything in between, angiosperms came to dominate many of the earth's biomes. Cenozoic Era The Cenozoic Era is also referred to as the Age of Mammals as mammals began to rule the earth following the extinction of dinosaurs in the Mesozoic Era. with quaternary being coined slightly later. The Atlantic coast has a layer of seaward-dipping Cenozoic sedimentary rocks, a few thousand feet thick, and extending northeastward to the Grand Banks of Newfoundland. In contrast, many different varieties of mammals soon developed. The Cenozoic Era is the last and most recent of the geologic eras.Its name means “new life” coming from the Greek root kainos, meaning “new,” and zoic, “life.” While this new life came to refer to mammals-thus coined The Age of Mammals- this new life could have just as easily been the angiosperm or flowering plants, the insects, the newest fish (teleostei) or modern birds. Facts about Cenozoic Era 1: the earlier time in Cenozoic era. The Florida peninsula is underlain by Cenozoic limestones that were deposited in shallow seas on a gradually subsiding surface. Due to the large span of time covered by the period, it is beneficial to discuss the animal population by the milestone of the era rather than in generalities.The beginning of the Paleogene Period was a time for the mammals that survived from the Cretaceous Period. The distribution and character of Cenozoic rocks along the Pacific coast of North America are much more varied, because there was active deformation and volcanism in that belt through-out the era. It is divided into two epochs - the Pleistocene epoch and the Holocene epoch. In Utah, Wyoming, and Colorado, freshwater lakes were filled with sediments. After the Paleozoic era, came the time of the Mesozoic era, followed by the Cenozoic era. All of these groups, including the Studies of lavas of the Pliocene and Pleistocene have revealed that reversals of the earth’s magnetic field have taken place. (A few had also lived during the Cretaceous, however.) The Paleogene Period is divided into three epochs including the Paleocene, Eocene, and Oligodene epochs. The beginning of the Cenozoic Era began when the Mesozoic Era ended and dinosaurs became extinct.   Triassic, Paleozoic Era The Cenozoic Era is divided into three periods, including the Paleogene, Neogene, and Quaternary periods. Tire record of man’s ancestors is not as well established, but they may have been tree-dwellers. Mammals took advantage of the situation and reproduced, thus dominating the land. The epochs in the Cenozoic era are very important to decide. And so the Cenozoic era continues. use. Sedimentary rocks predominated during the Cenozoic, and more than half of the world’s oil is located in them. Cenozoic Era Facts The Cenozoic Era is the last major division in time, beginning 65.5 million years ago and continuing until today. There were the minor modifications from ancestor to descendant that are invariably present in geologic succession; but the abrupt changes, in which characteristic life forms vanish completely without leaving lineal descendants, are much more definitive. Today, the Cenozoic is internationally accepted as the youngest of the three subdivisions of the fossiliferous part of Earth history. These estimates are based on the ratios of isotopes produced by radioactive decay in the rocks of the successive epochs. The first ancestor of modern humans was the Homo erectus, which existed about 1.6 million years ago.   Permian Dinosaurs had disappeared and mammals and birds dominated the land. The Cenozoic Era is  the last and most recent of the geologic eras. The name is picked because the mammals have the opportunity to diversify after the extinction of various groups. These three eras are broken into 12 periods. Those include Paleocene, Eocene, Oligocene, Miocene, Pliocene, Pleistocene, and Holocene. It is divided into only two epochs - the Miocene and Pliocene epochs. They migrated, Facts about Battle of Antietam talk one of the important battles during American civil war.