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The word mandrill is derived from the English words man and drill—the latter meaning ' baboon ' or ' ape ' and being West African in origin—and dated to 1744. [3] [4] [5] The name appears to have originally referred to chimpanzees. [6] The first scholar to record the name for the colorful monkey was Georges-Louis Buffon in 1766.
The mandrill displays the most extreme sexual dimorphism for weight among all primates, with a male-female weight ratio of 3.2 – 3.4 at eight to ten years of age. [21] Similarly, drills are one of the most sexually dimorphic primates for body weight, with a male growing up to 32 kg while a female grows to 12 kg.
The Cercopithecinae are a subfamily of the Old World monkeys, which comprises roughly 71 species, including the baboons, the macaques, and the vervet monkeys.Most cercopithecine monkeys are limited to sub-Saharan Africa, although the macaques range from the far eastern parts of Asia through northern Africa, as well as on Gibraltar.
Several Old World monkeys have anatomical oddities. For example, the colobus monkeys have stubs for thumbs to assist with their arboreal movement, the proboscis monkey has an extraordinary nose, while the snub-nosed monkeys have almost no nose at all. The penis of the male mandrill is crimson and the scrotum is lilac; the face is also brightly ...
The drill is a short-tailed monkey up to 70 cm (28 in) long, similar in appearance to the mandrill, but lacks the bright blue and red on the face of that species. It has high sexual dimorphism in weight, with males weighing up to 20 kg (44 lb) and females up to 12.5 kg (28 lb). [4] A close-up of face. The body is overall a dark grey-brown.
Baboon Temporal range: 2.0–0 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓ Early Pleistocene – Recent Olive baboon Yellow baboon calls recorded in Kenya Scientific classification Domain: Eukaryota Kingdom: Animalia Phylum: Chordata Class: Mammalia Order: Primates Suborder: Haplorhini Infraorder: Simiiformes Family: Cercopithecidae Tribe: Papionini Genus: Papio Erxleben, 1777 Type species Papio ...
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The guenons (UK: / ɡ ə ˈ n ɒ n z /, US: / ˈ ɡ w ɛ n. ə n z /) are Old World monkeys of the genus Cercopithecus (/ ˌ s ɜːr k ə ˈ p ɪ θ ə k ə s /).Not all members of this genus have the word "guenon" in their common names; also, because of changes in scientific classification, some monkeys in other genera may have common names that include the word "guenon".