Micromorphological analysis of sediments from the Middle Stone Age site of Sibudu Cave, KwaZulu-Natal, South Africa, provides a high-resolution sequence and evidence of site formation processes of predominantly anthropogenic deposits. This methodology allows for a detailed interpretation of individual anthropogenic activities, including the construction of hearths and bedding and the maintenance of occupational surfaces through the sweep out of hearths and the repeated burning of bedding. This analysis also provides a context for evaluating other studies at the site relating to magnetic susceptibility, paleobotany, paleozoology, anthracology, and studies of ochre.

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The ability to control fire was a crucial turning point in human evolution, but the question when hominins first developed this ability still remains. Here we show that micromorphological and Fourier transform infrared microspectroscopy (mFTIR) analyses of intact sediments at the site of Wonderwerk Cave, Northern Cape province, South Africa, provide unambiguous evidence-in the form of burned bone and ashed plant remains-that burning took place in the cave during the early Acheulean occupation, approximately 1.0 Ma. To the best of our knowledge, this is the earliest secure evidence for burning in an archaeological context. micromorphology | cooking hypothesis | Homo erectus

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Past research on Madagascar indicates that village communities were established about AD 500 by people of both Indonesian and East African heritage. Evidence of earlier visits is scattered and contentious. Recent archaeological excavations in northern Madagascar provide evidence of occupational sites with microlithic stone technologies related to foraging for forest and coastal resources. A forager occupation of one site dates to earlier than 2000 B.C., doubling the length of Madagascar's known occupational history, and thus the time during which people exploited Madagascar's environments. We detail stratigraphy, chronology, and artifacts from two rock shelters. Ambohiposa near Iharana (Vohémar) on the northeast coast, yielded a stratified assemblage with small flakes, microblades, and retouched crescentic and trapezoidal tools, probably projectile elements, made on cherts and obsidian, some brought more that 200 km.

The early Pleistocene colonization of temperate Eurasia by Homo erectus was not only a significant biogeographic event but also a major evolutionary threshold. Dmanisi's rich collection of hominin fossils, revealing a population that was small-brained with both primitive and derived skeletal traits, has been dated to the earliest Upper Matuyama chron (ca. 1.77 Ma). Here we present archaeological and geologic evidence that push back Dmanisi's first occupations to shortly after 1.85 Ma and document repeated use of the site over the last half of the Olduvai subchron, 1.85-1.78 Ma. These discoveries show that the southern Caucasus was occupied repeatedly before Dmanisi's hominin fossil assemblage accumulated, strengthening the probability that this was part of a core area for the colonization of Eurasia. The secure age for Dmanisi's first occupations reveals that Eurasia was probably occupied before Homo erectus appears in the East African fossil record.Lower Paleolithic | paleoanthropology I n recent years, paleoanthropologists have intensified the search for evidence for one of the most significant events in human evolution: the dispersal of early Homo from Africa to Eurasia. That Homo erectus was the first hominin to leave Africa and colonize Eurasia has been accepted by paleoanthropologists for over a century. However, models that linked the first African exodus to increases in stature, encephalization, and technological advances (1-3) have been challenged by discoveries at Dmanisi (4). Dmanisi is located in the southern Georgian Caucasus (41°20'10"N and 44°20'38"E), 55 km southwest of Tbilisi (Fig. 1). The prehistoric excavations at Dmanisi have been concentrated in the central part of a promontory that stands above the confluence of the Masavera and Pinasauri rivers. Lower Pleistocene deposits are preserved below the Medieval ruins and above the 1.85-Ma Masavera Basalt (Fig. 1). Those excavations yielded numerous exceptionally preserved hominin fossils. Stratigraphic studies revealed that that all of those hominin fossils are from sediments of stratum B, dated to ca. 1.77 Ma, based on 40 Ar/ 39 Ar dates, paleomagnetism, and paleontologic constraints (4, 5). In the main excavations, no artifacts or fossils have been found in the older stratum A deposits, which conformably overlie the Masavera Basalt. Dmanisi's rich collection of hominin fossils reveals a population with short stature and cranial capacities of only 600-775 cc (4-9). Artifact assemblages are all indicative of a Mode I technology, with no bifacial tools (10). Recently completed testing in the M5 sector of Dmanisi has yielded in situ artifacts and faunal remains from the older stratum A deposits, pushing back Dmanisi's occupational history into the upper Olduvai subchron. These findings indicate that African and Eurasian theaters for the evolution of early humans had been established even earlier than thought previously, with implications for the age of dispersals not only within Eurasia but also between Eurasia and Africa. This article describes t...

The Middle Stone Age (MSA) is associated with early behavioral innovations, expansions of modern humans within and out of Africa, and occasional population bottlenecks. Several innovations in the MSA are seen in an archaeological sequence in the rock shelter Sibudu (South Africa). At ~77,000 years ago, people constructed plant bedding from sedges and other monocotyledons topped with aromatic leaves containing insecticidal and larvicidal chemicals. Beginning at ~73,000 years ago, bedding was burned, presumably for site maintenance. By ~58,000 years ago, bedding construction, burning, and other forms of site use and maintenance intensified, suggesting that settlement strategies changed. Behavioral differences between ~77,000 and 58,000 years ago may coincide with population fluctuations in Africa.