Curated timeline

Human Evolution

From Early Primates to Homo sapiens: A chronological guide to the origins, divergence, and global dispersal of the human lineage across 65 million years.

• Origin of Primates (about 65 Million Years Ago)

  Shortly after the dinosaur extinction, small, nocturnal, tree-dwelling mammals called Plesiadapiformes emerge, representing the stem group of all primates.

• Haplorhini Divergence (about 63 Million Years Ago)

  The primate lineage splits into Strepsirrhini (lemurs, lorises) and Haplorhini (tarsiers, monkeys, apes). Haplorhines lose the wet nose (rhinarium) of their ancestors.

• Origin of Simiiformes (Anthropoidea) (about 40 Million Years Ago)

  Simians, the 'higher primates' consisting of monkeys and apes, emerge during the Eocene. They are characterized by enclosed eye sockets and diurnality.

• Catarrhini Divergence (about 30 Million Years Ago)

  Simians split into Platyrrhini (New World monkeys) and Catarrhini (Old World monkeys and apes), the latter featuring downward-facing nostrils.

• Aegyptopithecus (about 29 Million Years Ago)

  Aegyptopithecus zeuxis lives in the Fayum region of Egypt. This early catarrhine is a crucial fossil linking earlier primates to Old World monkeys and apes.

• Origin of Hominoidea (Apes) (about 25 Million Years Ago)

  Apes (Hominoidea) diverge from Old World monkeys. Apes are distinguished by a lack of a tail, larger brains, and highly mobile shoulder joints.

• Proconsul (about 23 Million Years Ago)

  Proconsul, an early Miocene ape from East Africa, exhibits a mix of monkey-like and ape-like features, representing a transitional form in hominoid evolution.

• Origin of Hominidae (Great Apes) (about 15 Million Years Ago)

  The ancestors of the great apes (Hominidae) diverge from the ancestors of the gibbons (lesser apes).

• Ponginae Divergence (about 14 Million Years Ago)

  The ancestors of orangutans (Ponginae) split from the African great ape lineage and migrate into Asia.

• Gorillini Divergence (about 8 Million Years Ago)

  The lineage leading to modern gorillas splits from the lineage that will eventually lead to chimpanzees and humans.

• Hominini (Chimp-Human Split) (about 7 Million Years Ago)

  The evolutionary split between the Pan (chimpanzee/bonobo) and Homo (human) lineages occurs, marking the dawn of the hominin clade.

• Sahelanthropus tchadensis (about 7 Million Years Ago)

  Discovered in Chad, Sahelanthropus is one of the oldest known species in the human family tree, showing possible early signs of upright walking.

• Orrorin tugenensis (about 6 Million Years Ago)

  Known as the 'Millennium Man', fossils from Kenya suggest this early hominin was bipedal while still retaining adaptations for climbing trees.

• Ardipithecus kadabba (about 5.6 Million Years Ago)

  An early hominin known from Ethiopia, notable for its teeth, which show a transition away from the large, self-sharpening canines of apes.

• Ardipithecus ramidus ('Ardi') (about 4.4 Million Years Ago)

  Ardi provides crucial evidence of early hominin anatomy, featuring an opposable big toe for tree climbing, but a pelvis adapted for bipedal walking.

• Australopithecus anamensis (about 4.2 Million Years Ago)

  The earliest known species of the Australopithecus genus emerges in East Africa, showing clear evidence of obligate bipedalism.

• Laetoli Footprints (about 3.6 Million Years Ago)

  Preserved in volcanic ash in Tanzania, these footprints provide irrefutable, direct evidence of human ancestors walking upright.

• Kenyanthropus platyops (about 3.5 Million Years Ago)

  A flat-faced hominin discovered in Kenya. Its evolutionary relationship to Australopithecus and Homo remains a subject of intense scientific debate.

• Australopithecus afarensis ('Lucy') (about 3.2 Million Years Ago)

  The famous 'Lucy' skeleton is discovered in Ethiopia. A. afarensis had a small brain but was a highly successful, fully bipedal hominin species.

• Australopithecus africanus (about 3.0 Million Years Ago)

  First discovered via the 'Taung Child' skull in South Africa, this species had a slightly larger brain and more human-like facial features than A. afarensis.

• Oldowan Stone Tools (about 2.6 Million Years Ago)

  The earliest widespread stone tool industry (Oldowan) appears in East Africa, marking the beginning of the Lower Paleolithic and significant cognitive leaps.

• Paranthropus aethiopicus (about 2.5 Million Years Ago)

  The 'robust australopithecines' emerge. They develop massive jaws and sagittal crests to anchor strong chewing muscles for processing tough, fibrous plant foods.

• Emergence of the Genus Homo (about 2.3 Million Years Ago)

  Homo habilis ('Handy Man') appears. Marked by a significantly larger braincase than Australopithecus, it is traditionally considered the first true member of our genus.

• Homo rudolfensis (about 2.0 Million Years Ago)

  Living alongside Homo habilis, H. rudolfensis possessed an even larger brain and larger teeth, demonstrating high hominin diversity during the early Pleistocene.

• Australopithecus sediba (about 1.98 Million Years Ago)

  A late-surviving Australopithecus from South Africa exhibiting a mosaic of primitive traits and advanced, Homo-like features in its hands and pelvis.

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