3/30 Lecture - Primate Evolution pt.2

Question 1

Oldest Definite Fossil Primate

Answer 1

Teilhardina asiatica

                   - Found in China
                   - Dates back to Earliest Eocene
                   - before PETM

Question 2

Beginning of Eocene -> 2 groups of Primates*

Answer 2

1) Adapoids

2) Omomyoids

Question 3

What we know of the 2 groups *

Answer 3

1) Definite Primates
- grasping hands and feet
- nails/no claws
- postorbital Bar
2) Probably evolved in SE Asia -> migrated through Holarctic Continents
3) 2 groups initially -> adaptive radiation -> spread out and diversified

Question 4

Adapoids

Answer 4

• larger
• diurnal
• folivore/frugivore
• grooming claw
• derived dorsal features

Question 5

Omoyoids

Answer 5

• smaller
• nocturnal
• insectivores o frugivores
• short snout
• most closely related with Tarsier

Question 6

Eocene/Oligocene Boundary

Answer 6

Eocene ends with largest Temp. drop in last 65MY

- Afterward…first ice sheets form in Antarctica

Question 7

A - Anthropoid (Oldest)

Answer 7

Eosimias

• 45MYA
• Eocene
• Shanghuang, China Asia

Question 8

C - Catarrhine (Oldest)

Answer 8

Catopithecus

• 37-29 MYA
• Late Eocene
• Fayum, Egypt - Afro Arabia

Question 9

C - Cercopithecoid (Oldest)

Answer 9

Nsungwepithecus

• 25MYA
• Late Oligocene
• Rukwa Rift, Tanzania, Afro Arabia

Question 10

H - Hominoid (Oldest)

Answer 10

Rudapithecus

• 25MYA
• Late Oligocene
• Rukwa Rift, Tanzania, Afro Arabia

Question 11

Early Hominoid - Proconsul

Answer 11

• 23 to 14 MYA
• Early Miocene
• East Africa, Afro Arabia
• med size
• sexually dimorphic
• Brain size = to a monkey
• NO TAIL
• arboreal quadrupedalism

Question 12

G - Great Ape (oldest)

Answer 12

Hispanopithecus

• earliest member of Great Ape
• Miocene
• Europe/Afro Arabia