WTD created an anthropoid 3D animation comparing the size of different primates and their extinct ancestors.
Gigantopithecus
A Size Comparison of Various Primates
Body size and vocalization in primates and carnivores
Chapter 2: Human Neuroanatomical Evolution
Tiny primates talk in ultrasound waves
Revisiting Darwin's comparisons between human and non-human primate facial signals, Evolutionary Human Sciences
Laughing Squid on LinkedIn: A Size Comparison of Various Primates
Assessing joint commitment as a process in great apes - ScienceDirect
Comparison of Old World and New World monkeys.
A Troop of Amiable Baboons Accept an Easygoing Horse as One of Their Own
Orangutan Genome Sequenced National Institutes of Health (NIH)
18 Extraordinary Types of Monkeys