What category of primates is characterized by a hooked nose and includes large mammals that are primarily ground dwellers?

The category of primates characterized by a hooked nose and includes large mammals that are primarily ground dwellers is Catarrhini. This group encompasses Old World monkeys and apes, which are known for their distinctive anatomical features, including the hooked nose structure that is prevalent among many species.

Catarrhini can be further divided into two subgroups: cercopithecoids (Old World monkeys) and hominoids (apes). Many members of the Catarrhini are indeed ground dwellers, especially in the case of certain Old World monkeys, such as baboons and macaques, which are often found in terrestrial habitats.

The hooked nose and other shared physical traits, such as a downward-facing nostril structure, distinguish this group from other primate categories. Understanding these characteristics provides insight into the evolutionary adaptations of these mammals to their environments.