Howler monkeys (genus Alouatta, monotypic in subfamily Alouattinae) are the most widespread primate genus in the Neotropics and are among the largest of the platyrrhines along with the muriquis (Brachyteles), the spider monkeys (Ateles) and woolly monkeys (Lagotrix). The monkeys are native to South and Central American forests.

Apr 1, 2014 · We identified size as the most important source of shape variation in the skull of howler monkeys. Interestingly, both taxonomy and climate have similar impact on skull shape and they strongly interact with each other, while sexual dimorphism is …

Dec 14, 2017 · Howler monkeys, which are among the largest primates in Central and South America, have a very peculiar cranial structure, with a highly flexed face which projects forward, a low vault, limited...

Nov 12, 2014 · Among atelines and other platyrrhines, Alouatta can be differentiated by the peculiar form of its skull (Hill 1962): the pyramidal shape of the relatively small brain case, the posteriorly directed nuchal plane, the prognathic face anterior to the braincase, and the extended and unflexed basicranial axis.

liar form of its skull (Hill 1962 ): the pyramidal shape of the relatively small brain case, the posteriorly directed nuchal plane, the prognathic face anterior to the brain- case, and the extended and unfl exed basicranial axis.

This skull is from a male howler monkey, a large platyrrhine (flat-nosed) New World simian with a strong prehensile tail. Howler monkeys inhabit tropical deciduous forests of southern Central America.

Dec 15, 2017 · Howler monkeys, which are among the largest primates in Central and South America, have a very peculiar cranial structure, with a highly flexed face that projects forward, a low vault, limited...

The skull of the howler monkeys (Alouatta spp., Atelidae) is characterised by a generalised rotation of the splanchnocranium with respect to the neurocranial antero-posterior axis. This process, referred to as airorhynchy, is the result of a derived structural relationship between basicranium, vault, and facial districts.

Dec 5, 2017 · Howler monkeys (genus Alouatta) display a distinctive cranial architecture characterized by airorhynch y (or retroflexion of the facial skeleton on the cranial base), a small braincase, and a posteriorly oriented foramen magnum.

Howler monkeys (genus Alouatta) display a distinctive cranial architecture characterized by airorhynchy (or retroflexion of the facial skeleton on the cranial base), a small braincase, and a posteriorly oriented foramen magnum.