Rhinocolobus

Rhinocolobus Temporal range: Pliocene - Early Pleistocene 3.4–1.5 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Mammalia
Order:	Primates
Suborder:	Haplorhini
Infraorder:	Simiiformes
Family:	Cercopithecidae
Subfamily:	Colobinae
Genus:	†Rhinocolobus Leakey, 1982
Species:	†R. turkanaensis
Binomial name
†Rhinocolobus turkanaensis Leakey, 1982

Rhinocolobus is an extinct genus of monkey closely related to modern colobus monkeys. It lived in eastern Africa during the Plio-Pleistocene, existing as recently as 1.5 million years ago.^[1]^[2]

Taxonomy

Fossils of Rhinocolobus were found in Shungura formation and Usno formation surrounding the Omo river valley and the Hadar formation surrounding the Afar depression in Ethiopia.^[3] It has been closely allied with living colobus monkeys as well as the extinct Paracolobus.

Description

Rhinocolobus was larger than any living colobus monkey, and also displayed sexual dimorphism. Fossils of males have been estimated to weigh 31 kg (68 lb), while females have been estimated at only 17 kg (37 lb).^[4] It had a fairly long muzzle, and a nearly absent nasal bone, comparable to Asian snub-nosed monkeys.^[1] Compared to its modern relatives, it would have had a noticeably short nose. However, postcranial elements are nearly indistinguishable from the corresponding bones of living colobus monkeys outside of size, which suggests that it was a mostly arboreal, folivorous species in spite of its greater size.

References

^ ^a ^b Werdelin, Lars; Sanders, William Joseph (2010). Cenozoic Mammals of Africa. University of California Press. p. 407. ISBN 9780520257214.
^ Leakey, Meave G. (1982). "Extinct large colobines from the Plio-Pleistocene of Africa". American Journal of Physical Anthropology. 58 (2): 153–172. doi:10.1002/ajpa.1330580207.
^ Frost, S.R.; Delson, E. (2002). "Fossil Cercopithecidae from the Hadar Formation and surrounding areas of the Afar Depression, Ethiopia". Journal of Human Evolution. 43 (5): 687–748. Bibcode:2002JHumE..43..687F. doi:10.1006/jhev.2002.0603. PMID 12457855.
^ Delson, E. (2000). "Body Mass in Cercopithecidae (Primates, Mammalia): Estimation and Scaling in Extinct and Extant Taxa". Anthropological Papers of the American Museum of Natural History. 118 (4): 159.

Haplorhini

Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Primates

Haplorhini

†"Omomyidae"

Altanius? Altiatlasius? Bownomomys Kohatius
Microchoerinae	Indusomys Melaneremia Microchoerus Nannopithex Necrolemur Paraloris Pseudoloris Quercyloris Vectipithex
"Anaptomorphinae"	Absarokius Anaptomorphus Anemorhysis Arapahovius Aycrossia Chlororhysis Gazinius Pseudotetonius Sphacorhysis Strigorhysis Tatmanius Teilhardina Tetonius Tetonoides Trogolemur Walshina
"Omomyinae"	Ageitodendron Asiomomys Brontomomys Chipetaia Chumashius Diablomomys Dyseolemur Ekwiiyemakius Gunnelltarsius Hemiacodon Jemezius Loveina Macrotarsius Nesomomys Omomys Ourayia Rooneyia Shoshonius Steinius Stockia Uintanius Utahia Washakius Wyomomys Yaquius
Tarkadectinae	Tarka Tarkadectes Tarkops

Tarsiiformes

†Archicebus †Afrotarsiidae? †"Omomyidae"?
Tarsiidae	Carlito Cephalopachus †Hesperotarsius †Oligotarsius Tarsius †Xanthorhysis?

Simiiformes

- see below↓

Simiiformes

†Altiatlasius?
†Amamria
†Aseanpithecus
†Nosmips?
†Phileosimias?

†Afrotarsiidae?

Afrasia
Afrotarsius

†Eosimiidae

Bahinia
Eosimias
Phenacopithecus

†Amphipithecidae

Amphipithecus
Bugtipithecus?
Ganlea
Krabia
Myanmarpithecus
Pondaungia
Siamopithecus

†Parapithecoidea

Arsinoea Biretia
Proteopithecidae	Proteopithecus Serapia
Parapithecidae	Abuqatrania Apidium Parapithecus Qatrania Ucayalipithecus

Platyrrhini

†Parvimico †Perupithecus †Szalatavus †Canaanimico †Branisella †Lagonimico
Aotidae	Aotus †Tremacebus
Pitheciidae	†Antillothrix Cacajao Callicebus †Carlocebus †Cebupithecia Cheracebus Chiropotes †Homunculus †Insulacebus †Mazzonicebus †Miocallicebus †Nuciruptor Pithecia Plecturocebus †Proteropithecia †Soriacebus †Xenothrix
Atelidae	Alouatta Ateles Brachyteles †Caipora †Cartelles †Chilecebus Lagothrix †Mohanamico Oreonax †Paralouatta †Protopithecus †Solimoea †Stirtonia
Cebidae	†Acrecebus Cebus †Dolichocebus †Killikaike †Panamacebus †Patasola Saimiri Sapajus
Callitrichidae	Callimico Callithrix Cebuella Leontocebus Leontopithecus Mico †Micodon Saguinus

Catarrhini	see below↓

Catarrhini

†Micropithecus
†Saadanius

†Oligopithecidae

Catopithecus
Oligopithecus
Talahpithecus

†Propliopithecidae

Aegyptopithecus
Propliopithecus

†Pliopithecoidea

Krishnapithecus Paidopithex †Kapi
Pliopithecidae	Epipliopithecus Pliopithecus
Dionysopithecidae	Dionysopithecus Platodontopithecus
Crouzeliidae	Anapithecus Barberapithecus Crouzelia Egarapithecus Fanchangia Laccopithecus Plesiopliopithecus Pliobates

Cercopithecoidea

†Alophe

†Victoriapithecidae

Noropithecus
Nsungwepithecus?
Prohylobates?
Victoriapithecus
Zaltanpithecus

Colobinae

Cercopithecinae

Cercopithecini	Allenopithecus Allochrocebus Cercopithecus Chlorocebus Erythrocebus Miopithecus †Nanopithecus
Papionini	Cercocebus †Dinopithecus †Gorgopithecus Lophocebus Macaca Mandrillus Papio †Paradolichopithecus †Parapapio †Pliopapio †Procercocebus †Procynocephalus Rungwecebus †Soromandrillus Theropithecus

Hominoidea	see below↓

Hominoidea

†Afropithecus †Ekembo †Equatorius †Griphopithecus †Kamoyapithecus? †Kenyapithecus †Morotopithecus †Nacholapithecus †Otavipithecus †Proconsul †Samburupithecus
†Dendropithecidae	Dendropithecus Micropithecus? Nyanzapithecus Oreopithecus? Rangwapithecus Rukwapithecus Simiolus Turkanapithecus
Hylobatidae	†Bunopithecus Hoolock Hylobates †Junzi Nomascus Symphalangus †Yuanmoupithecus

Hominidae

†Buronius †Graecopithecus †Nakalipithecus †Ouranopithecus
Ponginae	†Ankarapithecus †Gigantopithecus †Indopithecus †Khoratpithecus †Lufengpithecus †Meganthropus Pongo †Sivapithecus

Pan
Hominina	†Ardipithecus? †Australopithecus †Graecopithecus? Homo †Kenyanthropus †Orrorin? †Sahelanthropus? †Paranthropus

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Taxonomy

Description

References