Primate Origins

Question 1

cynodants

Answer 1

the therapsid reptiles mammals evolved from

Question 2

Proto-therian

Answer 2

egg-laying

Question 3

65 mya

Answer 3

dinosaurs disappear due to asteroid impact in Yucatan Peninsula

Question 4

K-T boundary

Answer 4

the boundary that few mammals cross and adaptively radiate

Question 5

Plesiadapids

Answer 5

earliest representatives of primate lineage

Question 6

Carpolestes simpsoni

Answer 6

Plesiadapids with primate-like features

Question 7

Adapids

Answer 7

precursors to strepsirrhines; resembled lemurs

Question 8

Omomyids

Answer 8

precursors to haplorhines; resembled tarsiers

Question 9

Eosimiids

Answer 9

earliest monkeys evolved from Omomyids

Question 10

Parapithecids

Answer 10

ancestor of both catarrhines & platyrrhines

Question 11

Propliopithecids

Answer 11

ancestral catarrhines

Question 12

Oligopithecids

Answer 12

like strepsirrhines

Question 13

Morotopithecus

Answer 13

first true ape, 20 mya

Question 14

bunodont molars

Answer 14

low-rounded cusps for frugivory

Question 15

Pieraloplithescus

Answer 15

best candidate for universal common ancestor of all modern apes

Question 16

Sivapithecus

Answer 16

best candidate for earliest orangutan

Question 17

30 mya

Answer 17

Platyrrhines appear in South America 30 mya

Question 18

Fayum Depression of Egypt

Answer 18

where haplorhines began to diversify

Question 19

Oligocene

Answer 19

when monkeys begin to radiate

Question 20

70 mya

Answer 20

primates begin to diverge

Question 21

Mesozoic

Answer 21

era when mammals arise