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Kamoyapithecus

From Wikipedia, the free encyclopedia
Species of fossil primate

Kamoyapithecus
Temporal range:
27.5–24.2 Million years ago
Scientific classificationEdit this classification
Kingdom:Animalia
Phylum:Chordata
Class:Mammalia
Order:Primates
Suborder:Haplorhini
Parvorder:Catarrhini
Family:incertae sedis
Genus:Kamoyapithecus
M.G. Leakey et al.,1995
Type species
Kamoyapithecus hamiltoni
Madden, 1980

Kamoyapithecus ('Kamoya' + Greek -pithekos “ape”) was a primate that lived inAfrica during the lateOligocene period, about 27.5-24.2 million years ago.[1][2][3][4][5][6] First found in 1948 as part of aUniversity of California, Berkeley expedition, it was at first thought to be under a form ofProconsul by C.T. Madden in 1980, but after a re-examination byMeave Leakey and associates later, the fossils were moved under a new genusKamoyapithecus, named after the renowned fossil finderKamoya Kimeu. The genus is represented by only one species,K. hamiltoni.[4]

Morphology

[edit]

Kamoyapithecus is known exclusively by its teeth and jaws. The type specimen, KNM-LS 7, was a rightmaxillary jaw fragment found during the expedition in 1948. Through this fossil as well as more recent fragments ofmandibles and teeth, it has been found thatKamoyapithecus had very large and robust canines. The canines appear to have a distinctive tip that linksKamoyapithecus with hominoid genusProconsul.[7]

Its teeth also have been found through plane film X-ray to not be thicklyenamelled. This suggests thatKamoyapithecus had more emphasis on foods that did not involve heavy wearing, such as soft fruits, nuts and seeds. This would have been well-placed in the Late-Oligocene in Africa, when forests covered a lot of the land.

Similar affinities with the jaw fragments have been seen withAfropithecus,Proconsul, and theMorotopithecus,[citation needed] but nothing definitive can be stated as to the relationship between these genera andKamoyapithecus as the fossil material is very fragmentary.

References

[edit]
  1. ^Andrews, P.; Harrison, T. (2009). "The anatomy and systematic position of the early Miocene proconsulid from Meswa Bridge, Kenya".Journal of Human Evolution.56 (5):479–496.Bibcode:2009JHumE..56..479H.doi:10.1016/j.jhevol.2009.02.005.PMID 19394999.
  2. ^Boschetto, H.B.; Brown, F.H.; McDougall, I. (1992). "Stratigraphy of the Lothidok Range, northern Kenya, and K-Ar ages of its Miocene primates".Journal of Human Evolution.22 (1):47–71.Bibcode:1992JHumE..22...47B.doi:10.1016/0047-2484(92)90029-9.
  3. ^Disotell, T. R.; Noviello, C. M.; Raaum, R. L.; Sterner, K. N.; Stewart, C. (2005). "Catarrhine primate divergence dates estimated from complete mitochondrial genomes: concordance with fossil and nuclear DNA evidence".Journal of Human Evolution.48 (3):237–257.Bibcode:2005JHumE..48..237R.doi:10.1016/j.jhevol.2004.11.007.PMID 15737392.
  4. ^abLeakey, M.G.; Ungar, P.S.; Walker, A. (1995)."A new genus of large primate from the late Oligocene of Lothidok, Turkana District, Kenya".Journal of Human Evolution.28 (6):519–531.Bibcode:1995JHumE..28..519L.doi:10.1006/jhev.1995.1040.
  5. ^MacLatchy, L.; Young, N. M. (2004). "The phylogenetic position ofMorotopithecus".Journal of Human Evolution.46 (2):163–184.Bibcode:2004JHumE..46..163Y.doi:10.1016/j.jhevol.2003.11.002.PMID 14871561.
  6. ^Steiper, M. E.; Sukarna, T. Y.; Young, N. M. (2004)."Genomic data support the hominoid slowdown and an Early Oligocene estimate for the hominoid–cercopithecoid divergence".PNAS.101 (49):17021–17026.Bibcode:2004PNAS..10117021S.doi:10.1073/pnas.0407270101.PMC 535389.PMID 15572456.
  7. ^Hammond, A.; Foecke, K.; Kelley, J. (2019)."Hominoid anterior teeth from the late Oligocene site of Losodok, Kenya".Journal of Human Evolution.128:59–75.Bibcode:2019JHumE.128...59H.doi:10.1016/j.jhevol.2018.12.010.PMID 30825982.S2CID 73489242.
Microchoerinae
"Anaptomorphinae"
"Omomyinae"
Tarkadectinae
Tarsiiformes
Tarsiidae
Simiiformes
    • see below↓
Teilhardina sp.
Afrotarsiidae?
Eosimiidae
Amphipithecidae
Parapithecoidea
Proteopithecidae
Parapithecidae
Aotidae
Pitheciidae
Atelidae
Cebidae
Callitrichidae
Catarrhini
    • see below↓
Eosimias sinensis
Oligopithecidae
Propliopithecidae
Pliopithecoidea
Pliopithecidae
Dionysopithecidae
Crouzeliidae
Victoriapithecidae
Colobinae
Cercopithecinae
Cercopithecini
Papionini
Hominoidea
    • see below↓
Aegyptopithecus zeuxis
Dendropithecidae
Hylobatidae
Ponginae
Dryopithecini
Gorillini
Hominini
Hominina
Gigantopithecus blacki
Kamoyapithecus
Kamoyapithecus hamiltoni
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