Nowadays, there are about up to 522 species of primates (NHP) living on this planet, ranging from the tiniest Madame Berthe's mouse lemur, which weighs 30g, to the largest eastern gorilla, weighing over 200kg. A ‘super’-briefed classification of existing primate species is as following:
Primates:
1. the strepsirrhines ('twisted-nostriled')
a) lemurs
b) galagos
c) lorisids
2. the haplorhines ('simple-noses')
a) the tarsiers
b) the simians ('snub-noses', ‘monkeys and apes’).
i. the platyrrhines ('flat-noses'), or New World monkeys
Ø capuchins
Ø howlers
Ø squirrel monkeys
ii. the catarrhines ('narrow-noses'), or Old World monkeys
Ø baboons
Ø macaques
iii. the apes (including humans)
Ø gibbons
Ø great apes