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It has generally been thought that brain size increased along the human line especially rapidly at the transition between species, with H. habilis brain size smaller than that of H. ergaster / H. erectus, jumping from about 600–650 cc (37–40 cu in) in H. habilis to about 900–1,000 cc (55–61 cu in) in H. ergaster and H. erectus.
Together the lumbar and thoracic curves bring the body's center of gravity directly over the feet. [7] Specifically, the S-shaped curve in the spine brings the center of gravity closer to the hips by bringing the torso back. Balance of the whole vertebral column over the hip joints is a major contribution for efficient bipedalism. [17]
Olduvai Hominid number 8 (OH 8) is a fossilized foot of an early hominin found in Olduvai Gorge by Louis Leakey in the early 1960s. [1]Kidd et al. (1996) argued that the fossil assemblage exhibits both ape and human characteristics. [2]
OH 7 (Olduvai Hominid № 7), also nicknamed "Johnny's Child", [1] is the type specimen of Homo habilis. The fossils were discovered on November 4, 1960 in Olduvai Gorge, Tanzania, by Jonathan and Mary Leakey. The remains are dated to approximately 1.75 million years, and consist of fragmented parts of a lower mandible (which still holds ...
Besides manifesting lesser prognathism than the australopithecines, OH 24 also portrays a larger cranial vault, indicating an expansion in brain size from its ancestor, and the reduction of facial prognathisim typical of the evolution of early Homo. [4] The individual's third molars had erupted, which indicates that OH 24- "Twiggy" was an adult ...
While the genomes sequenced from the Ranis individuals are the oldest Homo sapiens ones, scientists have previously recovered and analyzed DNA from Neanderthal remains that date back 400,000 years ...
KNM ER 1813 is a skull of the species Homo habilis.It was discovered in Koobi Fora, Kenya by Kamoya Kimeu in 1973, and is estimated to be 1.9 million years old.. Its characteristics include an overall smaller size than other Homo habilis finds, but with a fully adult and typical H. habilis morphology.
However, the specimens were found in a stratigraphic unit dating to 1.95–1.78 million years ago, whereas the earliest Homo fossils at the time dated to 2.33 million years ago (H. habilis from Hadar, Ethiopia). [1] Currently, the oldest Homo specimen is LD 350-1 dating to 2.8–2.75 million years ago from Ledi-Geraru, Ethiopia. [7]