Common ancestor with primates (8.5 mya)
SHARED CHARACTERISTICS
- Forward facing overlapping eyes → stereoscopic vision
- molars+premolars low rounded cusps
- Larger and more complex brain compared to body size
- Complex social behaviors , few young with extended parental care
BIOGEOGRAPHY
- All in areas previously part of Gondwanaland
ARBOREAL (most)
- Clavicle and collarbone (unlike most mammals)
- Freely rotating limbs
- Most: opposable thumbs
GENETICS
- Trichromatic colour vision → unique to primates
- Olfactory receptor pseudogenes
- Share large %of DNA
Common ancestor with African Apes (6mya)
- Upright posture, lack external tails
- Flat nails on digits,
- Share 98% DNA with chimpanzees and 93% with Rhesus monkeys
- Opposable thumbs
- Sexually dimorphic males and females