Teresa E. Steele

A Howiesons Poort tradition of engraving ostrich eggshell containers dated to 60,000 years ago at Diepkloof Rock Shelter, South Africa

Ongoing debates about the emergence of modern human behavior, however defined, regularly incorporate observations from the later part of the southern African Middle Stone Age and emphasize the early appearance of artifacts thought to reflect symbolic practice. Here we report a large sample of 270 fragments of intentionally marked ostrich eggshell from the Howiesons Poort at Diepkloof Rock Shelter, Western Cape, South Africa. Dating from ≈60,000 years ago, these pieces attest to an engraving tradition that is the earliest reliable evidence of what is a widespread modern practice. These abstract linear depictions were made on functional items (eggshell containers), which were curated and involved in daily hunter-gatherer life. The standardized production of repetitive patterns, including a hatched band motif, suggests a system of symbolic representation in which collective identities and individual expressions are clearly communicated, suggesting social, cultural, and cognitive underpinnings that overlap with those of modern people.

Neandertals made the first specialized bone tools in Europe

Modern humans replaced Neandertals ∼40,000 y ago. Close to the time of replacement, Neandertals show behaviors similar to those of the modern humans arriving into Europe, including the use of specialized bone tools, body ornaments, and small blades. It is highly debated whether these modern behaviors developed before or as a result of contact with modern humans. Here we report the identification of a type of specialized bone tool, lissoir, previously only associated with modern humans. The microwear preserved on one of these lissoir is consistent with the use of lissoir in modern times to obtain supple, lustrous, and more impermeable hides. These tools are from a Neandertal context proceeding the replacement period and are the oldest specialized bone tools in Europe. As such, they are either a demonstration of independent invention by Neandertals or an indication that modern humans started influencing European Neandertals much earlier than previously believed. Because these finds clearly predate the oldest known age for the use of similar objects in Europe by anatomically modern humans, they could also be evidence for cultural diffusion from Neandertals to modern humans.

Isotopic dietary analysis of a Neanderthal and associated fauna from the site of Jonzac (Charente-Maritime), France.

We report here on the isotopic analysis (carbon and nitrogen) of collagen extracted from a Neanderthal tooth and animal bone from the late Mousterian site of Jonzac (Charente-Maritime, France). This study was undertaken to test whether the isotopic evidence indicates that animal protein was the main source of dietary protein for this relatively late Neanderthal, as suggested by previous studies. This was of particular interest here because this is the first isotopic study of a relatively late Neanderthal associated with Mousterian of Acheulian Tradition (MTA, dating to approximately 55,000 to 40,000 BP) technology. We found that the Jonzac Neanderthal had isotopic values consistent with a diet in which the main protein sources were large herbivores, particularly bovids and horses. We also found evidence of different dietary niches between the Neanderthal and a hyena at the site, with the hyena consuming mainly reindeer.

Archaeological shellfish size and later human evolution in Africa

Approximately 50 ka, one or more subgroups of modern humans expanded from Africa to populate the rest of the world. Significant behavioral change accompanied this expansion, and archaeologists commonly seek its roots in the African Middle Stone Age (MSA; ∼200 to ∼50 ka). Easily recognizable art objects and “jewelry” become common only in sites that postdate the MSA in Africa and Eurasia, but some MSA sites contain possible precursors, especially including abstractly incised fragments of ocher and perforated shells interpreted as beads. These proposed art objects have convinced most specialists that MSA people were behaviorally (cognitively) modern, and many argue that population growth explains the appearance of art in the MSA and its post-MSA florescence. The average size of rocky intertidal gastropod species in MSA and later coastal middens allows a test of this idea, because smaller size implies more intense collection, and more intense collection is most readily attributed to growth in the number of human collectors. Here we demonstrate that economically important Cape turban shells and limpets from MSA layers along the south and west coasts of South Africa are consistently and significantly larger than turban shells and limpets in succeeding Later Stone Age (LSA) layers that formed under equivalent environmental conditions. We conclude that whatever cognitive capacity precocious MSA artifacts imply, it was not associated with human population growth. MSA populations remained consistently small by LSA standards, and a substantial increase in population size is obvious only near the MSA/LSA transition, when it is dramatically reflected in the Out-of-Africa expansion.

The age of the hominin fossils from Jebel Irhoud, Morocco, and the origins of the Middle Stone Age

The timing and location of the emergence of our species and of associated behavioural changes are crucial for our understanding of human evolution. The earliest fossil attributed to a modern form of Homo sapiens comes from eastern Africa and is approximately 195 thousand years old, therefore the emergence of modern human biology is commonly placed at around 200 thousand years ago. The earliest Middle Stone Age assemblages come from eastern and southern Africa but date much earlier. Here we report the ages, determined by thermoluminescence dating, of fire-heated flint artefacts obtained from new excavations at the Middle Stone Age site of Jebel Irhoud, Morocco, which are directly associated with newly discovered remains of H. sapiens. A weighted average age places these Middle Stone Age artefacts and fossils at 315 ± 34 thousand years ago. Support is obtained through the recalculated uranium series with electron spin resonance date of 286 ± 32 thousand years ago for a tooth from the Irhoud 3 hominin mandible. These ages are also consistent with the faunal and microfaunal assemblages and almost double the previous age estimates for the lower part of the deposits. The north African site of Jebel Irhoud contains one of the earliest directly dated Middle Stone Age assemblages, and its associated human remains are the oldest reported for H. sapiens. The emergence of our species and of the Middle Stone Age appear to be close in time, and these data suggest a larger scale, potentially pan-African, origin for both.

Strontium isotope evidence for migration in late Pleistocene Rangifer: Implications for Neanderthal hunting strategies at the Middle Palaeolithic site of Jonzac, France

In order to understand the behaviours and subsistence choices of Palaeolithic hunter-gatherers, it is essential to understand the behavioural ecology of their prey. Here, we present strontium isotope data from sequentially-sampled enamel from three reindeer (Rangifer tarandus ssp.) and a single bison (Bison cf. priscus) from the late Middle Palaeolithic site of Jonzac (Chez-Pinaud), France. The results are used to investigate the ranging and migratory behaviours of these important prey species. We found that the bison had isotope values most consistent with a local range, while the three reindeer had values indicating a seasonal migration pattern. Due to the similarity of the patterning of two of the three reindeer and in conjunction with zooarchaeological results, we suggest that they may have been from the same herd, were likely killed around the same point during their seasonal round and may therefore be the product of a single hunting event or a small number of successive hunting events. The isotope analyses complement the zooarchaeological data and have allowed greater insight into the palaeoecology of these species, the palaeoenvironment, and Neanderthal site use and hunting strategies.

USING MORTALITY PROFILES TO INFER BEHAVIOR IN THE FOSSIL RECORD

Abstract Mortality profiles can be used to investigate modes of accumulation of fossil assemblages, including predation by ancient nonhuman and human (Homo) hunters. Prey age at death reflects hunting decisions and opportunities in terms of calories returned for energy spent and risks taken. Nonhuman carnivores commonly harvest vulnerable individuals (young and old), whereas humans consistently can take prime adults. As an example of how mortality profiles can be used to illuminate predator behavior, this article examines when the ability to select prime-age animals emerged during human behavioral evolution. Although it would be expected that the appearance of this behavior coincided with the appearance of morphologically and archaeologically modern humans, analyses of archaeological assemblages from western Europe and South Africa suggest that this trait was already present in archaic people who preceded modern humans. Studying age distributions in fossil assemblages is not without its limitations, including the difficulty of estimating age at death in fossil specimens, pre- and postdepositional biases, and reconstructing the age structure and behavior of prey herds. Nevertheless, valuable behavioral information can be gained by using controlled comparisons of many assemblages.

An Early Date for Cattle from Namaqualand, South Africa: Implications for the Origins of Herding in Southern Africa

When did cattle come to South Africa? Radiocarbon dates on a newly found cow horn indicates a time in the early first millennium AD. In a study of the likely context for the advent of cattle herding, the authors favour immigrants moving along a western route through Namibia.

New excavations at the site of Contrebandiers Cave, Morocco

PaleoAnthropology 2012: 145−201.

Initial Investigations into the Exploitation of Coastal Resources in North Africa During the Late Pleistocene at Grotte Des Contrebandiers, Morocco

While there has long been an interest in Holocene coastal adaptations globally (see other papers in this volume and Erlandson 2001), only more recently has attention focused on marine resource exploitation during the more ancient times of the Middle Paleolithic (MP) and Middle Stone Age (MSA) of Europe and Africa (∼250,000–50,000 years ago). The ancestors of all living humans originated in Africa sometime at the beginning, during, or at the end of the MSA, and therefore, investigations into the full variation of human adaptations during this time provide critical data on how changing diets and environments are linked to modern human origins. McBrearty and Brooks (2000) include “shellfishing” starting at 140,000 years ago (140 kya) and “fishing” at 110 kya in their list of behavioral innovations of the MSA (their Fig. 13:530) and as part of a general increase in diet breadth (their Table 3:492) that is indicative of fully modern human behavior. The earliest evidence of shellfishing has since been revised to at least 164 kya (Marean et al. 2007). In addition, Parkington (2003; see also Crawford et al. 1999) has proposed that the nutrients provided by shellfish were integral to building effective modern human brains during the MSA and, therefore, to modern human origins. Others see the exploitation of marine resources as typical of coastal living, and that real indicators of changing behavior, evidenced by further increased diet breadth and increased human population densities, come only after the end of the MSA (Klein et al. 2004). Because studies into coastal adaptations allow us to investigate the relationship between subsistence, technology, human population size and density, and the environment, these studies are uniquely positioned to inform on modern human origins, and therefore, it is important that future studies focus on marine resource exploitation during these ancient times.