ANT101H5 Final: Epochs Chart

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Sherry Fukuzawa

EPOCH STONE AGE LITHIC AGE WHO TOOL TECH TIME (Africa) PALEOCENE Dinosaurs Age of first Primates -1 primates WE THINK 65-56 MYA disappeared -Carpolestes – PRIMATES FIRST first evidence of APPEARED HERE *Paleozoic Era – primates found mammalian like in Wyoming reptiles came -Carboniferous into existence Permian -Order Plesiadapiformes = Extinct mammal – C common E ancestry N with O primates Z = Squirrel O like I Insectivore C = Flexible digits, wrists, ankles (arboreal) = 1st primate (60mya) = Fossil evidence: Morocco = Dentition similar to modern mouse lemur (Strepsirrhin i) Primates first appeared 60 MYA - First primate dentition similar to modern mouse lemur Huge adaptive radiation of mammals – diversification of mammals EOCENE Age of Prosimian - EARLIEST 55-35 MYA prosimians - Radiation- one DEFINITIVE Lemurs and species EVIDENCE OF Lorises diversified into PRIMATES many species “AGE OF LEMURS and filled in AND LORISIS AND empty niche TARSIERS” = Complete postorbital bar = Larger frontal lobe = Nails = Forward placed eyes = Slightly reduced snout = Limbs for grasping & leaping = dental formula First definitive primates – because of key primate 37 MYA characteristics 2 key families: Omomyidae- tarsier like (37 MYA) - Nocturnal - Ate fruit and insects - Hind limbs slightly longer than forelimbs Adapidae – ancestor of lorises and lemurs - Mostly diurnal - Ate fruit and leaves Earliest Anthropoids begin to come into existence – ancestor of early apes and humans Catopithecus – appeared at end of Eocene – assumed to be ancestor of catarrhines because of catarrhine-like and Strepsirrhini features = Walled eye orbit(enclose d postorbital septum) = Somewhat forward foramen magnum = Rounded cusps on molars = Catarrhine dental formula= Primitive Strepsirrhini features (Lemur like): = Small brain = Long snout OLIGOCENE Age of monkeys *Most Oligocene fossils found in Branched off of “AGE OF THE 35-23 MYA and Apes - Fayum depression in Egypt NWM MONKEYS” Monkeys (platyrrhines) - ANCESTERS OF started to and catarrhines, OWM AND NWM evolve OWM, apes and humans 2 families: Parapithecidae- ancestor of NWM – genus Apidium – small arboreal monkey, leaping, quadrupees (resemble platyrrhine monkey) = Dental formula = Diet of fruit & seeds = Small arboreal quadruped = Leaping & springing Propliopithecida- ancestor of OWM apes and humans (resemble generalized catarrhine) = Dental formula = Small to medium in size = Likely fruit eaters Genus Aegyptopithecus – preceded major split in
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