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Flashcards in Module 6 Deck (28):
1

Geological time scale

utilizing geological strata to date

2

Cenozoic Era 65 mya

when primates first started appearing. Contains the following epochs

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Paleocne epoch 65-53 mya

The first epoch of the cenozoic era. The emergence of pledsiadapis, most dinosaurs extinct at this time.

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Plesiadapis

primitive primate-like creature. prehensile limbs, long pointed muzzle, larger brain than other mammals at the time. Likely related to gliding mammals of the present

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Eocene epoch 53-35 mya

climate warmed, many mammals became extinct, but some primates flourished. NA and EU connected still at this time. The primates in this time are considered true primates.

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adpidae

Most diversified. Ancestral to modern lemurs and lorises.

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omomyidae

most widely distributed. Ancestral to tarsiers and some anthropoids.

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econiches

ecological niche

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catopithecus

an anthropoid sitting on the eocene/oligocnene boundary boundary found at the fayum depression. Had dental formulation of higher primates

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fayum depression

an ancient lakebed west of Cairo Egypt

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dental formula

incisors, canine, premolar, molar formula

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oligocene epoch (35-25 mya)

continental drift separated old and new world, old world anthropoids found in fayum depression

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parapithecidae

family containing the genus apidium. A family of small anthropoid primates

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apidium

The most common small animal found in fayum. Close dental formula to old world anthropods, and identical to new world monkeys. Probs ate fruit and seeds

15

propliothecus

A genus in the family Propliopithecus. Generalized old world anthropoid, primitive.

16

aegyptopithecus

A genus of the family Propliopithecus. Short limbed, slow moving arboreal. very primitive anthropoid. Better vision that lemurs etc. Monkey like upper molars, are like lower molars. Important as bridges gap between oligocene primates and Eocene provisions and the succeeding miocene monkeys and hominoids.

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micene epoch (25-5mya)

Climate became cooler and drier, causing tropical forest to shrink and savanna to grow. AT the end, the continents look pretty much how they do today. The golden ages of hominoids.

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early miocene

early and generalized primitive hominoids.

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middle meocene

forest dwelling hominoids. Wideley scattered in Europe, asia and africa.

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late miocene

Eurasia climate becomes drier. Ramapithecus, SIvapithecus, and Dryopithecus extinct at this time except in eastern asia. Gigantopithecus survived

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drypithecines

Existed in middle miocene epoch, forest dwelling hominoids originating in Africa and migrated to europe morphological variance bc of econiches, average 24 pounds, varied locomotion, could be ancestral to later hominoid groups.

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drypithecines

13-11 mya Existed in middle miocene epoch, forest dwelling hominoids originating in Africa and migrated to europe morphological variance bc of econiches, average 24 pounds, varied locomotion, could be ancestral to later hominoid groups.

23

ramapithecines

12-7mya, cooler and more grasslands in middle miocene. Most widely distributed and successful group of species that ever lived (besides homo). Africa, asia, europe. Dimorphic, size 40-70 pounds. Quadrupedal and bipedal locomotion. Differed from drypithecines in dentition, and facial characteristics.

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incipient bipedalism

Beginning to happen bipedalism

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prognathism

relationship of mandible to base of skull

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y-5 cusp molar pattern

5 raised cusps, specific to hominoids

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sivapthecines

lived in turkey, pakistan, india and china. Shared many features to ramapithcines. Very similar to orang-utan

28

gigantopithecus

ground-living grassland ape, competitor to hominoids. Very large, 700-1200 pounds, 10-12 ft tall.