4 - Thursday, October 4, 2007 Not all of the primates that...

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Thursday, October 4, 2007 Not all of the primates that we talk about will show characteristic to every degree Prosimians- Lemurs, lorises, and Tarsiers more primitive of the primates, tend to exhibit evolutionary trends to a lesser degree than the anthropoid do. Number of characteristics that are in common within the prosimians Highly developed sense of smell Still have wet noses Relatively the smallest brains of all the primates o Encephalization Quotient (EQ)- allows us to standardize relative brain size to make comparisons even when animals are considerably different body size. Takes 100 lb animals and weigh the brain. Say the aveage of the citers that weight 100lb is 2 lbs 2lb/100lb= 1.0 so likewise on average a critter that is 1 lb and his brain size is 1 oz 1 oz/1lb= 1.0 4lb/100lb = 2.0 --- compared to the average that is 1.0 it is double that so then it would be 2.0 than expected. o The purpose of this is to see who has the bigger brain relative to size. Prosimians: 1.1
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This note was uploaded on 04/07/2008 for the course ANTH 2300 taught by Professor Durband during the Fall '07 term at Texas Tech.

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4 - Thursday, October 4, 2007 Not all of the primates that...

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