Jebel Irhoud

Jebel Irhoud is a cave and archaeological site in Morocco known for fossils attributed to early Homo sapiens, dating to about 300,000 years ago.

Jebel Irhoud hominins: Fossils from Jebel Irhoud attributed to early Homo sapiens and dated to about 300,000 years ago. These fossils are the finds that made the site central to debates about early Homo sapiens.
Thermoluminescence dating: A method that estimates when heated minerals were last exposed to high temperatures by measuring stored radiation. It helped date heated flint artifacts associated with the Jebel Irhoud deposits.
Homo sapiens: The living human species, distinguished by a distinctive combination of anatomical and behavioral traits. The Jebel Irhoud fossils are attributed to early members of this species.
Homo sapiens origin debate: Scientific discussion about when, where, and through which populations Homo sapiens emerged. The site’s age and North African location broadened the debate beyond a single eastern African origin.
Jebel Irhoud 1: A partial adult skull from Jebel Irhoud, among the fossils attributed to early Homo sapiens. Its facial structure resembles modern humans, while its braincase retains more archaic features.
Electron spin resonance dating: A method that estimates the time since tooth enamel or other materials accumulated radiation-induced trapped electrons. It provided an independent dating line for materials from the site.
Pan-African origin of Homo sapiens: The model that Homo sapiens emerged through connected populations across Africa rather than at one isolated birthplace. Jebel Irhoud supports a deep African history extending beyond the continent’s eastern regions.
Mosaic evolution: Evolution in which different traits within a lineage change at different rates and times. Jebel Irhoud’s facial and braincase anatomy exemplifies traits becoming modern at different times.
Jebel Irhoud 10: A partial mandible from Jebel Irhoud attributed to an early Homo sapiens individual. This jaw contributes evidence about the anatomy represented at the site.
Uranium-series dating: A radiometric dating method based on uranium decay and the accumulation of its daughter isotopes. Uranium-series measurements helped constrain the age of fossil-bearing deposits.

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