Platyrrhini

Platyrrhini proper, the only observation with which I am acquainted is due to Pansch, who found in the brain of a foetal Cebus Apella, in addition to the sylvian fissure and the deep calcarine fissure, only a very shallow antero-temporal fissure (scissure parallele of Gratiolet).

Note on the Resemblances and Differences in the Structure and the Development of the Brain in Man and Apes Charles Darwin 1845

But, it by no means follows, that the rule which may hold good for the Platyrrhini extends to the Catarrhini.

Note on the Resemblances and Differences in the Structure and the Development of the Brain in Man and Apes Charles Darwin 1845

Now this fact, taken together with the circumstance that the antero-temporal sulcus is present in such Platyrrhini as the Saimiri, which present mere traces of sulci on the anterior half of the exterior of the cerebral hemispheres, or none at all, undoubtedly, so far as it goes, affords fair evidence in favour of Gratiolet's hypothesis, that the posterior sulci appear before the anterior, in the brains of the

Note on the Resemblances and Differences in the Structure and the Development of the Brain in Man and Apes Charles Darwin 1845

[[Haplorrhini]] splits into infraorders [[New World monkey | Platyrrhini]]

Conservapedia - Recent changes [en] HappyBirthdayDarwin 2010

[[Haplorrhini]] splits into infraorders [[New World monkey | Platyrrhini]] and [[Catarrhini]].

Conservapedia - Recent changes [en] HappyBirthdayDarwin 2010