|Paralouatta marianae skull|
|Scientific classification |
MacPhee & Horovitz, 2004
These Caribbean islands no longer contain endemic primates, although the most recently discovered species, the Hispaniola monkey, was reported to have lived on Hispaniola until the settlement by the Europeans. The relationship of these species is supported by details in the formation of the skull and the lower jaw, such as a reduction in the number of teeth.
The exact timing and causes of extinction are not well-known and their relationship and placement in the parvorder of the New World monkeys is unsure. Originally they were thought to be closely related to the night monkeys, but more recent research as placed them in Callicebinae subfamily, containing the titi monkeys.
So far, five species of Xenotrichini are known:
- MacPhee, R. D. E.; Horovitz, I. (14 May 2004). "New craniodental remains of the quaternary Jamaican monkey Xenothrix mcgregori (Xenotrichini, Callicebinae, Pitheciidae), with a reconsideration of the Aotus hypothesis". American Museum Novitates. 3434: 1–51. doi:10.1206/0003-0082(2004)434<0001:NCROTQ>2.0.CO;2.