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nounlarge black gibbon of Sumatra having the 2nd and 3rd toes partially united by a webtype of:
Definition that contains siamang
- hylobatidae used in some classifications for the lesser apes (gibbons and siamangs); sometimes considered a subfamily of Pongidae
- lesser ape gibbons and siamangs
- family hylobatidae used in some classifications for the lesser apes (gibbons and siamangs); sometimes considered a subfamily of Pongidae
- symphalangus used in some classifications for the siamangs
- genus symphalangus used in some classifications for the siamangs