7 - FOSSIL EVIDENCE FOR THE EMERGENCE OF PRIMATES Overview...

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1 FOSSIL EVIDENCE FOR THE EMERGENCE OF PRIMATES Overview: I. The Earliest Primate Roots II. The Ancestor of Prosimians III. The Ancestor of Anthropoids IV. The Ancestor of Hominoids I.PRIMATE TAXONOMY ORDER OF PRIMATES PRIMATE SUBORDERS A. Prosimian 1. Tarsier, Lemurs, Lorises B. Anthropoids 1. Monkeys a. New World monkeys b. Old World monkeys 2. Hominoids a. Gibbon & Siamangs (Hylobates) b. Great Apes (Orangutan, Gorilla, Chimpanzee, Bonobos) 3. Humans
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2 Forward-facing eyes Postorbital Bar Large Cranial Vault Short Snout Diverse Dentition Divergent Big Toes Divergent Thumbs Grasping Hands Grasping Feet Nails Rather Than Claws PRIMATE CHARACTERISTICS Fossil Evidence for the Emergence of Primates I. THE EARLIEST PRIMATE ROOTS: Primate like mammals A. Purgatorius: Carpolese Simpsoni B. Teilhardina Asiatica THE EARLIEST PRIMATE ROOTS A. The Paleocene Fossils : 1. Genus & Family: PURGATORIUS Species: Carpolestes simpsoni, Ignacius, Plesiadapis cookei. 2. Place: North America About 60 to 63 million years ago , during the Paleocene epoch in the Cenozoic era, Purgatorius lived in the present day town of Purgatorius, Montana. Morphological traits include: (a) long tail, (b) limbs with claws, not nails, (d) eyes at side of head, (e) long snout, (f) no post- orbital bar, (g) rodent-like jaws & 44 teeth & dental formula :3 I , 1 C , 4 PM , 3 M
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1. Purgatorius Family: Carpolestes simpsoni lived 56 MYA. Opposable toes and fngers with nails, but eye sockets are the side not Forward-Facing eyes. Origin of out lacks visual specializations (such as forward-facing eyes and orbital THE EARLIEST PRIMATE ROOTS Genus: Teilhardina An early marmoset-like primate that lived in North America, Europe and Asia . When: During the early ocene epoch, about 56-47 million years ago Fossil Found 1. Species: Teilhardina asiatica Place: China About 55 million years ago Paleocene epoch of the Cenozoic era lived in China . Morphological traits include: (a), eyes at front of face with bony ring around each eye socket , (b) large brain case, (c) primitive teeth 44 teeth & dental formula :3 I , 1 C , 4 PM , 3 M THE EARLIEST PRIMATE ROOTS 1. Genus: Teilhardina 2. Species: Teilhardina asiatica Place: China About 55 million years ago Paleocene epoch of the Cenozoic era lived in China . Eye sockets on the side of the face not forward facing
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7 - FOSSIL EVIDENCE FOR THE EMERGENCE OF PRIMATES Overview...

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