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.
Caratinga
Some 150 northern muriquis (Brachyteles arachnoids) live today at the Fazenda Montes Claros, near Caratinga. It is one of their last refuges. The muriqui is the largest monkey of the Americas and one of the most endangered primates of the world. Specialists cite the biological importance of the Fazenda Montes Claros, where three other primate species live along with the muriqui: the buffy headed marmoset, the black-capped capuchin and the brown howler monkey.