Mammalia

Theria
Eutheria(placentals)
Primates
Platyrrhini(New World monkeys)
Cebidae
Alouattinae
Alouatta(howler monkeys)
Alouatta fusca(howler monkey)
Atelinae
Brachyteles
Brachyteles arachnoides(woolly spider monkey)
 
Metatheria(marsupials)
Didelphimorphia
Didelphidae(opossums)
Didelphis
Didelphis albiventris
Didelphis marsupialis