platyrrhine

A platyrrhine with a prehensile tail is even more so.

The following is the listing of the various platyrrhine families, and their placement in the Order Primates:

The five families are ranked together as the Ceboidea superfamily, the only living platyrrhine superfamily.

Note that the RBP3 intron 1 has also been used to investigate the platyrrhine primates phylogenetics.

They remained circumspect in placing this primate taxonomically as it had shared characteristics with a number of platyrrhine taxa.

This has led many scientists to hypothesize that the primitive platyrrhine ancestors of Branisella came to South America from Africa.

This hypothesis requires that the evolution of the polymorphic system of the platyrrhine pre-dates the separation of the Old World and New World monkeys.

Morphometric Analysis of Platyrrhine Femora with Taxonomic Implications and Notes on Two Fossil Forms.

Therefore, every male platyrrhine is dichromatic because it can only receive either the M or L photopigment on its single X chromosome in addition to its S photopigment.

However, the X chromosome gene locus is polymorphic for M and L alleles, rendering heterozygous platyrrhine females with trichromatic vision, and homozygous females with dichromatic vision.

Their prehensile tail with a hairless gripping pad at the end also allows for this locomotion, which then means they have increased caudal vertebrae, with about 31 caudal vertebrae as opposed to another platyrrhine like Cebus with only 23 on average.