Flashcards in Module 6 Deck (28):
Geological time scale
utilizing geological strata to date
Cenozoic Era 65 mya
when primates first started appearing. Contains the following epochs
Paleocne epoch 65-53 mya
The first epoch of the cenozoic era. The emergence of pledsiadapis, most dinosaurs extinct at this time.
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
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.
Most diversified. Ancestral to modern lemurs and lorises.
most widely distributed. Ancestral to tarsiers and some anthropoids.
an anthropoid sitting on the eocene/oligocnene boundary boundary found at the fayum depression. Had dental formulation of higher primates
an ancient lakebed west of Cairo Egypt
incisors, canine, premolar, molar formula
oligocene epoch (35-25 mya)
continental drift separated old and new world, old world anthropoids found in fayum depression
family containing the genus apidium. A family of small anthropoid primates
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
A genus in the family Propliopithecus. Generalized old world anthropoid, primitive.
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.
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.
early and generalized primitive hominoids.
forest dwelling hominoids. Wideley scattered in Europe, asia and africa.
Eurasia climate becomes drier. Ramapithecus, SIvapithecus, and Dryopithecus extinct at this time except in eastern asia. Gigantopithecus survived
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.
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.
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.
Beginning to happen bipedalism
relationship of mandible to base of skull
y-5 cusp molar pattern
5 raised cusps, specific to hominoids
lived in turkey, pakistan, india and china. Shared many features to ramapithcines. Very similar to orang-utan