General Trends of Primates

Question 1

Division which occurs at Tarsiers

Answer 1

Prosimians
to
Anthropoids

Question 2

Brain size

Answer 2

Increases

Question 3

snout (olfactory) size

Answer 3

decreases

Smaller and Flatter

Question 4

Relative Eye Size

Answer 4

Decreases

Question 5

Arboreal

Question 6

Nails vs Claws

Answer 6

Nails (except for a toilet claw for Lorises)

Question 7

Reliance on Smell

Answer 7

Decreases

Question 8

Prehensile Tails

Answer 8

Disapear

Question 9

Cranial Capacity

Answer 9

Increases (relative to body size)

Question 10

Olfactory Optical Shift

Answer 10

Increase Emphasis on Sight and Decrease Reliance on Smell
3D (stereoscopic) Vision, For Accurate Distance Judgment
Forward Facing Eyes

Question 11

Digits

Answer 11

Increase Independent Movement of Digits

Claws to Nails

Question 12

Prognathism

Answer 12

Decrease in Degree of Prognathism
Chin Attachment Point for Muscles for Speech
Decrease Size in Zygomatic Arch

Question 13

Dentition

Answer 13

36 to 32 Teeth
Relative Size of Jaw Decrease as Size of Teeth Decreases
Canines Become Larger
Dental Arcade Moves From ‘U Shaped’ to Parabolic, as Face Flattens