Homo erectus georgicus in the context of "Early expansions of hominins out of Africa"

⭐ In the context of Early expansions of hominins out of Africa, *Homo erectus georgicus* is considered significant because it represents…

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⭐ Core Definition: Homo erectus georgicus

The Dmanisi hominins, Dmanisi people, or Dmanisi man were a population of Early Pleistocene hominins whose fossils have been recovered at Dmanisi, Georgia. The fossils and stone tools recovered at Dmanisi range in age from 1.85 to 1.77 million years old, making the Dmanisi hominins the earliest well-dated hominin fossils in Eurasia and the best preserved fossils of early Homo from a single site so early in time. Though their precise classification is controversial and disputed, the Dmanisi fossils are highly significant within research on early hominin migrations out of Africa. The Dmanisi hominins are known from over a hundred postcranial fossils and five famous well-preserved skulls, referred to as Dmanisi Skulls 1–5.

The taxonomic status of the Dmanisi hominins is somewhat unclear due to their small brain size, primitive skeletal architecture, and the range of variation exhibited between the skulls. Their initial description classified them as Homo (erectus?) ergaster (an otherwise African taxon), or potentially an early offshoot of later Asian H. erectus. The discovery of a massive jaw, D2600, in 2000 led researchers to hypothesize that more than one hominin taxon had been present at the site and in 2002, the jaw was designated as the type specimen of the new species Homo georgicus. Later analyses by the Dmanisi research team have concluded that all the skulls likely represent the same taxon with significant age-related and sexual dimorphism, though this is not a universally held view. In 2006, the team favoured subsuming the taxon under Homo erectus as H. erectus georgicus or H. e. ergaster georgicus. The nomenclature is still debated.

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👉 Homo erectus georgicus in the context of Early expansions of hominins out of Africa

Several expansions of populations of archaic humans (genus Homo) out of Africa and throughout Eurasia took place in the course of the Lower Paleolithic, and into the beginning Middle Paleolithic, between about 2.1 million and 0.2 million years ago (Ma).These expansions are collectively known as Out of Africa I, in contrast to the expansion of anatomically modern humans (Homo sapiens) into Eurasia, which may have begun shortly after 0.2 million years ago (known in this context as "Out of Africa II").

The earliest presence of Homo (or indeed any hominin) outside of Africa dates to close to 2 million years ago.A 2018 study identified possible hominin presence at Shangchen, central China, as early as 2.12 Ma based onmagnetostratigraphic dating of the lowest layer containing what may possibly be stone artefacts.The oldest known human skeletal remains outside of Africa are from Dmanisi, Georgia (Dmanisi skull 4), and are dated to 1.8 Ma. These remains are classified as Homo erectus georgicus.

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Homo erectus georgicus in the context of Shangchen

Shangchen (Chinese: 上陈) is a Lower Palaeolithic archaeological site in Lantian County, Shaanxi, China, some 25 km south of Weinan.It was discovered in 1964, and excavated during 2004 and 2017.

Stone tools found at the site were dated based on magnetostratigraphy in a 2018 study. Possible artefacts were found in 17 layers, tentatively dated by their discoverers to between 1.26 Ma (palaeosol S15) and 2.12 Ma (loess L28). The date of 2.12 Ma predates the earliest known fossils of archaic humans in Eurasia (Homo erectus georgicus) by 300,000 years. Whether these potential tools were made by an early species in the genus Homo or another hominin species is unknown.

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