Article · Wikipedia archive · Last revised Jun 7, 2026

Rukwapithecus

Rukwapithecus fleaglei, the only species of the genus Rukwapithecus, is a fossil primate. Known from a single lower jaw preserving four teeth, it is interpreted as the earliest hominoid, a member of the group that includes gibbons, humans, and other apes. It is known from the Nsungwe Formation of south-western Tanzania, which dates to just over 25.2 million years ago. This area has also yielded the early Old World monkey Nsungwepithecus. Phylogenetic analysis places it within the group Nyanzapithecinae, related to Rangwapithecus and Nyanzapithecus.

Last revised
Jun 7, 2026
Read time
≈ 1 min
Length
168 w
Citations
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Source
Rukwapithecus
Temporal range:
Scientific classification Edit this classification
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Infraclass: Placentalia
Order: Primates
Superfamily: Hominoidea
Family: Dendropithecidae
Subfamily: Nyanzapithecinae
Genus: Rukwapithecus
Stevens et al., 2013
Species:
R. fleaglei
Binomial name
Rukwapithecus fleaglei
Stevens et al., 2013

Rukwapithecus fleaglei, the only species of the genus Rukwapithecus, is a fossil primate. Known from a single lower jaw preserving four teeth, it is interpreted as the earliest hominoid, a member of the group that includes gibbons, humans, and other apes. It is known from the Nsungwe Formation of south-western Tanzania, which dates to just over 25.2 million years ago. This area has also yielded the early Old World monkey Nsungwepithecus. Phylogenetic analysis places it within the group Nyanzapithecinae, related to Rangwapithecus and Nyanzapithecus.1

References

References

  1. Stevens, Nancy J.; Seiffert, Erik R.; O'Connor, Patrick M.; Roberts, Eric M.; Schmitz, Mark D.; Krause, Cornelia; Gorscak, Eric; Ngasala, Sifa; Hieronymus, Tobin L.; Temu, Joseph (2013). "Palaeontological evidence for an Oligocene divergence between Old World monkeys and apes" (PDF). Nature. 497 (7451): 611–614. Bibcode:2013Natur.497..611S. doi:10.1038/nature12161. PMID 23676680.