sentences:  Monito del monte, "Dromiciops gliroides", has a semi-arboreal habit.It has been discussed why this South American marsupial appears to more closely related to the marsupials of Australasia than to those of the Americas.The other marsupial in the Park is the long-nosed shrew opossum, "Ryncholestes raphanurus", first described for science in 1923.