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D4500's features are very rare compared to early Homo in that it had a small braincase yet an unusually large prognathic face. [2] "Skull 5" has an accompanying mandible, D2600, which was found in 2000. In 1999 two other skulls had been found at the same site—D2280 and D2282. D2280 was a near-complete brain-case with 780 cc brain-size.
The brain size of H. erectus varies considerably, but is generally smaller in H. erectus sensu lato, as low as 546 cc (33.3 cu in) in Dmanisi skull 5. [53] Asian H. erectus overall are rather big-brained, averaging roughly 1,000 cc, [ 46 ] staying within the range of variation for modern humans. [ 54 ]
KNM-ER 3883 is a significant fossil specimen of early African Homo erectus, dating to approximately 1.5–1.6 million years ago.This cranium, discovered in Kenya, has an endocranial volume exceeding 800 cc, which is substantially larger than earlier Homo species and suggests a notable increase in brain size.
Asian H. erectus overall are rather big-brained, averaging roughly 1,000 cc. [89] Encephalisation quotients (the ratio between observed to predicted brain mass for an animal of a given size, cautiously used as an indicator of intelligence) typically score from three to four for "classic" H. erectus assuming a body weight on the whereabouts of ...
Two other H. erectus fossils were parts of the skull found at different archaeological sites. [5] The earlier site, Dana Aoule North 5 (DAN5), is dated between 1.6 and 1.5 Ma. [5] Busidima North 12 (BSN12) is younger. It dates to 1.26 Ma. [5] The DAN5 H. erectus cranium was small and gracile. [5] In contrast, the BSN12 skull was more robust and ...
Leakey named it "Chellean Man", in reference to the Oldowan tools found at the site, which were then referred to by the now-obsolete name Chellean.Heberer (1963) provisionally named a new species Homo leakeyi based on the specimen in honor of Leakey, [3] but most subsequent workers have regarded it as Homo ergaster, or as Homo erectus (H. ergaster is sometimes regarded as a subspecies of H ...
Solo Man (Homo erectus soloensis) is a subspecies of H. erectus that lived along the Solo River in Java, Indonesia, about 117,000 to 108,000 years ago in the Late Pleistocene. This population is the last known record of the species.
The most important is its brain size, which falls between 1,155 and 1,421 cc, [20] with an approximate average of 1,200 cc. [12] The average brain size of Asian H. erectus is about 1,000 cc, [36] with mostly towards the lower range up to 800 cc; [37] while early H. sapiens have the brain size ranging from 1,200 to 1,400 cc. [38]