ANT333Y1Y Lecture #4 – Review of Living Primates & Systematics: Crarrhini
o Cercopithecoidea – narrow nose and palate, tail present
o Hominoidea – broad nose and palate, tail absent
o Family Cercopithecidae
Inter-orbital regionInscisors Jaw Molar cusps Cheek pouch Tail
Cercopithecinae Narrow Broad Shallow Low Present Short
Colobinae Broad Narrow Deep High Absent Long
Divided into five groups:
4. mandrills & drills
Widest distribution of any living primate genus – used in research
Range in body size from 2.6 kg – 16 kg
Some larger species (M. thibetana) are more folivorous than smaller species (M. silenus).
Free of viruses that other monkeys have
Large (5.2 kg – 11 kg) forest-living monkeys found in Africa.
Cercocebus spp. are more terrestrial whereas Lophocebus spp. are more arboreal.
Predominantly eat fruits and invertebrates.
1 3. Baboons
Range in size from 9.9 kg – 30 kg
All species are sexually dimorphic in body size and canine size
They have long molars and broad incisors
They have a long snout & pronounced brow ridges
Their limbs are nearly equal in length.
4. Mandrills & Drills
Large (~ 30 kg) forest monkeys from western Africa.
Extremely sexually dimorphic in body size and coloration.
Primarily terrestrial, although the smaller females and young animals do climb trees.
Alpha male has a golden colouration – due to hormones
Males are much larger than females
Range in body size from 3 kg to 9 kg – come in a lot of different colours
Guenons have sexually dimorphic canines, relatively narrow molar teeth, and short 3rd molars
All are basically arboreal quadrupeds, although some make use of ground, and some are good
Divided into three functional groups:
1. The African colobus monkeys
2. The langurs and leaf monkeys of Asia
3. The “odd-nosed” monkeys.
1. The African Colobus Monkeys
a. Black and white colobus (Colobus)
Largest and most spectacular of the African colobine monkeys.
Considerable sexual dimorphism, males 9.6-13.5 kg and females 7.5-9.5 kg.
Predominantly eat mature le