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Anthro 201 - Midterm 3 (final)
Slide 22 - Early primate evolution
13
Aerospace Engineering
Undergraduate 1
04/19/2011

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Term
How have geology and climate changed over he course of primate evolution?
Definition
Constantly changing, very little has constant. 65 MYA - dinosaurs disappear and radiation of mammals, birds and insects begins to flourish.
Term
Continental drift
Definition
Tectonic plates have shifted considerably over the past 200 MY.
-causes CLIMATE CHANGE
-(larger landmasses = colder)
-Orientation of landmasses affects water circulation.
Term
Context of evolution
Definition
In cretaceous (dinosaur era until 65 MYA), angiosperms appear and spread to many new ecological niches (trees, seeds, fruits, etc.).
-Early primates exploited some of these niches (VATA theories).
Term
Primate-like mammals
Definition
Plesiadapiforms - closely related to mammals (65-54 MYA). Rocky Mountains. Similar to strepsirhines.

NO STEREOSCOPIC VISION.
Term
True Primates
Definition
First primate fossils appear around 54 MYA - EXPANSION OF THE TROPICS. N AMERICA AND EUROPE, later ASIA.
Term
2 True Primate families (AO)
Definition
ADAPIDAE - strepsirhine-like, but slow like lorises.

OMOMYIDAE - Like tarsiers.

These were probably Strepsirhine and tarsier ancestors.
Term
Haplorhine ancestors? (think darwiM)
Definition
Neither?

Darwinius Masillae - ADAPIFORM - may be the "missing link".
Term
Early "anthropoids"
Definition
aka SIMIANS (monkeys and apes). From Eocene (54-36 MYA), debated if from asia or africa.
Term
Anthropoid radiation
Definition
Due to great diversity in anthropoids (found in FAYUM, EGYPT).
Term
FAYUM monkeys
Definition
Aegyptopithecus zeusxis
-30 MYA
-Catarrhine (precedes OWM-ape split)
Term
Early hominoids (apes)
Definition
-during Oligocene and Miocene (27-5 MYA)
-Proconsul
Term
Hominoid Radiation
Definition
-Mid-miocene (15-10 mya).
-Miocene ape taxonomy is a mess, no clear ancestors to african apes or gibbons.
-Orangutang ancestor sivapithecines.
Term
Apes underwent radiation during:
Definition
MIOCENE (23-5 MYA)
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