Old World nonhuman primates commonly found in research institutions are distinguished by the following characteristics: Social disposition: Like human primates, nonhuman primates have an inherent need ...
In the United States, such colonies have been established in all eight Regional Primate Research Centers. Under undisturbed conditions Old World monkey infants are weaned by their mothers at the age ...
but these primates (mostly Old World monkeys) have greatly reduced joint mobility throughout their limbs and they utilize more pronated hand positions. Terrestral quadrupedalism can be subdivided ...
Scientists usually split monkeys into two groups. Old World monkeys refer to those of Africa and Asia (like guenons) while New World monkeys are those found in Latin America (like squirrel monkeys ...
These vocal primates are the biggest of all the New World monkeys. Unlike Old World monkeys, howlers and other New World species have wide, side-opening nostrils and no pads on their rumps.
The role of body-size variation as a "line of least evolutionary resistance" has been documented in both Old and New World monkeys (Figure 2). In these cases, diversification of cranial form ...
Popa langurs, or Trachypithecus popa, belong to the Trachypithecus genus of Old World primates which live throughout Southeast Asia. “Old World” refers to primates native to Africa ...