Archaeoindris
Though similar to "Palaeopropithecus", "Archaeoindris" was significantly larger and more robust. "Archaeoindris" was one of the largest primates to ever evolve, and was the largest-known strepsirrhine primate, weighing an estimated . It was roughly the size of an adult male gorilla, which was first noted by Lamberton.
International Primate Day
In 2016, Animal Defenders International (ADI) received a celebrity endorsement from Moby for their attempt to help the Barbary macaques for that year's event.
Primates are a very large family of about 200 species, include monkeys, bonobos, lemurs, orangutans, et al. Statements on great apes which focus largely or entirely on apes would not include all primates.