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Primate Evolution

Intro to Primates

QuestionAnswer
What are Basal Primates? The earliest primates
How did basal primates differ from modern primates? Terrestrial Nocturnal Ate insects Keen sense of smell Scurried about
What is the K-T extinction event? Meteoroid toxifies planet so plants canm't photosynthesize and therefore animals can't eat = slow, painful death
What is adaptive radiation? Proliferation of species over time (many different species out of one)
What is natural selection? Favorable characteristics get passed on and increase "fitness"
What are problems with the Primate Fossil Record? Many gaps because we don't have all the fossils ever made Limited by technology and evidence
What are Plesiadaptiforms? First adaptive radiation of mammals that became arboreal
In which epoch were Plesiadaptiforms found? Paleocene
When was the Paleocene? 65-55 mya
When was the Eocene? 55-36 mya
What is primatology? The study of primates
What species are considered haplorhines? Tarsiers, monkeys, apes
What species are considered Strepsirhines? Lemurs, Lorises, Galagos
What are Simians? First monkeys found in SE China about 45 mya
What is a theory? Something that has been tested over and over and has yet to be disproved
What is an epoch? Significant period of time
In which epoch were Omomyids found? Eocene
What characteristics categorize an Omomyid? Tiny, nocturnal, ate insects and fruits, related to haplorhines
What characteristics categorize an Adapid? Larger, diurnal, ate more fruits and leaves, related to strepsirhines
Tarsiers are an example of an Omomyid or Adapid? Omomyid
Lemurs and Lorises are examples of Omomyids or Adapids? Adapids
What is the group of characteristics for living in trees called? The Arboreal Theory
What other explanations are there besides Arboreal Theory? Visual Predation Hypothesis, Expensive Tissue Hypothesis, "Rafting" Hypothesis
When was the Oligocene? 36-24 mya
Created by: 554108510
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