WTD created an anthropoid 3D animation comparing the size of different primates and their extinct ancestors.
The Evolution of Primates
A Size Comparison of Various Primates
Could Planet of the Apes' future actually happen? The science behind the fiction
Facts About Apes
Monkeys vs Apes: How are they different? - PASA
A Powerful Tornado Size Comparison
Body size and vocalization in primates and carnivores
Primates - marmosets, monkeys, apes, lemurs, humans
Chapter 2: Human Neuroanatomical Evolution