The platyrrhine and catarrhine monkeys have their primitive ancestor among extinct forms of the Lemuridae.
"Evolution in Modern Thought" by Ernst Haeckel
They are dark skinned, dolichocephalic (index 74), platyrrhine and of short stature (1.574 m. 5 ft. 2 in.).
"Man, Past and Present" by Agustus Henry Keane
In the Old-World Apes there is a bony external auditory meatus, which is wanting (as a bony structure) in the Platyrrhines.
"The Cambridge Natural History, Vol X., Mammalia" by Frank Evers Beddard