Scientific synonyms
Simia syndactylus Raffles, 1821
Hylobates syndactylus (Raffles, 1821)
Symphalangus syndactylus continentis Thomas, 1908
Symphalangus syndactylus gibbon (C. Miller, 1779)
Symphalangus syndactylus subfossilis Hooijer, 1960
Other names
= Siamang Gibbon