ANTH 110 1nd Edition Lecture 18 Outline of Last Lecture I. ApesA. Lesser ApesB. Great Apesi. Gorillasii. Chimpanzees and Bonobosiii. Orangutans I. Primate Social GroupsOutline of Current Lecture I. Primate and Hominin OriginsA. Cenozoic Erai. Tertiary Periodii. Quaternary Period II. Continental DrifCurrent Lecture I. Primate and Hominin OriginsKey notes:- Shifts in weather and environment are closely connected to where primates and hominins are distributed. - Most of the early discoveries of primates are from the Americas. - The genus Apidium is the ancestor of all primates. In order to better understand time and Earth's existence, we have classified its history into distinct eras, periods, and epochs. In this class, we will focus on the Cenozoic Era. These notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.Quaternary and Tertiary are periods in the Cenozoic Era. Further, both the Quaternary and Tertiary periods are divided into Epochs. We will need to have an understanding of the order of these time periods from oldest to most recent. A. Cenozoic EraThis is the Era anthropologists are most concerned with. It consists of the Tertiary and Quaternary Periods. i. Tertiary Period: began 65 million years ago (m.y.a)Paleocene Epoch began 65 m.y.aEocene Epoch began 55 m.y.aOligocene Epoch began 34 m.y.aMiocene Epoch began 23 m.y.aPliocene Epoch began 5 m.y.aii. Quaternary Period began 1.8 m.y.a. Pleistocene Epoch began 1.8 m.y.a Holocene Epoch began 0.01 m.y.a II. Continental DrifMore than 200 million years ago, earth was one, giant continent: Pangea. Pangea then split into Laurasia and Gonovia 180 million years ago. As the continents continued to drif, mammals began to diversify and spread out. Anthropologists mark the beginning of this to be 65 million years
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