Human skeletal remains from sub-Saharan Africa are virtually non-existent for the period when genetic models indicate the first modern human emigration from this region. The skull from Hofmeyr, South Africa, which has been dated to c. 36 ka, is one of the only specimens known from this critical part of the late Pleistocene. The Hofmeyr skull was largely intact at the time of its discovery but has suffered post-recovery mishandling, with the resultant loss of most of the lower facial skeleton, the mandibular angle, the right mastoid process, and much of the occipital. Given the potential significance of this specimen, we have undertaken its restoration and reconstruction so as to provide a more complete picture of the cranial morphology of the late Pleistocene population from which it derived. On the basis of photographs, measurements, and morphological description recorded prior to its having been damaged, we reconstructed some of the missing bone in modeling clay on a high resolution plastic cast of the cranium. The original specimen was CT scanned, as was the cast with the reconstructed maxilla and mastoid; these scans were employed in the final computer reconstruction of the skull. Virtual reconstruction of the remainder of the cranium was accomplished using mirror-imaging and reference-based methods, employing 3D geometric morphometrics from a sample of recent human crania to compute coordinate-based estimates of the missing parts. This reconstruction provides a more complete picture of the Hofmeyr cranium and serves as a basis for more comprehensive morphometric comparisons.

Human fossils and the genetics of extant human populations indicate that living people derive primarily from an African population that lived within the last 200,000 years. Yet it was only approximately 50,000 years ago that the descendants of this population spread to Eurasia, where they swamped or replaced the Neanderthals and other nonmodern Eurasians. Based on archaeological observations, the most plausible hypothesis for the delay is that Africans and Eurasians were behaviorally similar until 50,000 years ago, and it was only at this time that Africans developed a behavioral advantage. The archaeological findings come primarily from South Africa, where they suggest that the advantage involved much more effective use of coastal resources. Until now, the evidence has come mostly from deeply stratified caves on the south (Indian Ocean) coast. Here, we summarize results from recent excavations at Ysterfontein 1, a deeply stratified shelter in a contrasting environment on the west (Atlantic) coast. The Ysterfontein 1 samples of human food debris must be enlarged for a full comparison to samples from other relevant sites, but they already corroborate two inferences drawn from south coast sites: (i) coastal foragers before 50,000 years ago did not fish routinely, probably for lack of appropriate technology, and (ii) they collected tortoises and shellfish less intensively than later people, probably because their populations were smaller.

Duinefontein 2 (DFT2) preserves at least two buried land surfaces within a 10-m thick dune plume on the Atlantic Coast of South Africa, about 35km north of Cape Town. Optically stimulated luminescence dating indicates that the sands enclosing the upper surface accumulated around 270ky ago, while the sands between the two surfaces were accumulating about 290ky ago. Excavation so far has focused on the upper buried surface, which is now exposed over 480m2. Historically, there was no body of fresh water nearby, and the surrounding vegetation was a variant of the regional fine-leafed shrub or fynbos. Pedogenic alteration of the sands and bones of water-loving mammals and amphibians indicate, however, that the bones and associated Acheulean artifacts accumulated near the edge of a large pond or marsh. In addition, the principal mammal species (buffalo, wildebeest, and kudu) imply a sharply different regional vegetation in which grass and broad-leafed bush were much more common. The artifacts are distributed across the upper buried surface in no apparent pattern, but the large mammal bones tend to occur as clusters of skulls, vertebrae, ribs, and other axial elements, often in near anatomical order. Limb bones are mostly missing, and the clusters appear to mark carcasses from which the limb bones were selectively removed. The bones rarely show marks from stone tools, but marks from carnivore teeth are common. Together with numerous hyena coprolites, the abundant tooth marks suggest that hyenas and perhaps other carnivores were largely responsible for carcass disarticulation. The human role appears to have been insignificant, which suggests that local Acheulean people obtained few large mammals, whether by hunting or scavenging. Among the small number of other Acheulean ‘carcass’ sites for which bone damage observations are available, the best-documented sites suggest the same limited human ability to acquire large mammals, but many additional sites will be necessary to determine if this was the Acheulean norm. Greatly expanded excavation of the lower buried surface at DFT2 can provide an additional, high-quality data point.

Excavations into a coastal cliff at Ysterfontein (YFT) 1, South Africa, have revealed 2.5–3m of stratified sands containing classic Middle Stone Age (MSA) stone artifacts, abundant mussel and limpet shells, numerous fragments of ostrich eggshell, and somewhat rarer bones from mammals, birds, tortoises, and snakes. The sands apparently filled a crevice-like, calcrete shelter, where the artifacts and animal remains accumulated partly in place and perhaps partly through slippage down the face of a dune that once stood between the site and the sea. Accelerator radiocarbon dating of ostrich eggshell places the sequence before 33,400 years ago. Artifact typology provisionally suggests that it formed after 70,000 years ago. The fauna resembles faunas from the handful of other known coastal MSA sites and contrasts with faunas from regional Later Stone Age (LSA) sites in its low diversity of coastal marine species and in the large size of its limpets and tortoises. The difference suggests that MSA people exploited local resources less intensively, probably because their populations were less dense.

Excavations at Duinefontein (DFT) 2 near Cape Town, South Africa have recovered numerous stone artefacts and animal bones on an ancient surface sealed within iron-stained eolian sands. U-series analysis of an overlying calcrete places the sands before 150 ka ago, while the large mammal taxa imply an age between 400 and 200 ka ago. The artefacts include a classic Acheulean handaxe and probable biface shaping flakes that support this age estimate. The principal mammalian species are long-horned buffalo, black wildebeest, greater kudu, Cape zebra, and grysbok/steenbok, which imply a grass-and-bush mosaic instead of the historic small-leafed shrubland. Hippopotamus and reedbuck indicate that water stood nearby, probably in dune swales. The large mammal bones are mostly vertebrae and other axial elements, often in near-anatomical order. Both proximal and distal appendicular elements are rare. Bones with carnivore damage are common, but ones with stone tool marks are scarce. The sum suggests a water-edge attritional death site where people played a minimal role and carcasses were disarticulated mainly by carnivore feeding and by trampling. Stone tool marks tend to be equally rare at other Acheulean attritional death sites, and the implication may be that Acheulean people rarely obtained large mammals, whether by hunting or scavenging. Human scavengers at DFT2 would not have encountered a disproportionate number of distal (versus proximal) limb elements, and it follows that the tendency for distal elements to dominate many archeological assemblages need not reflect scavenging versus hunting. Even if DFT2 was not itself a locus of intense human activity, it provides a useful baseline for evaluating bone damage, skeletal part representation, and other variables at sites where people were deeply involved.

Die Kelders Cave 1, on the southwestern coast of South Africa, preserves a rich Later Stone Age (LSA) occupation and a thick series of Middle Stone Age (MSA) layers below. Limited excavation of the MSA layers has yielded numerous lithic artifacts and faunal remains, and nine human teeth. Sedimentologial and faunal evidence suggests that the MSA levels accumulated under comparatively cool, mesic conditions, probably at the beginning of the Last Glaciation (isotope stage 4). The MSA artifact assemblage consists overwhelmingly of quartzite débitage. Elongate flakes are fairly common; systematic retouch is extremely rare. The high frequency of silcrete artifacts in some of the lower units may signal the Howiesons Poort variant of the MSA, although diagnostic backed and truncated pieces are absent. The animal bones come from rodents, insectivores and other small creatures that were probably introduced mainly by owls, as well as from larger mammals and seabirds that were probably introduced mainly by humans. This latter component resembles the Klasies River Mouth MSA fauna in the abundance of eland relative to wild pigs, the dominance of penguins over flying birds, and the absence of fish. At both Die Kelders and Klasies River Mouth these features tentatively suggest that MSA hunter-foragers exploited animal resources less effectively than their LSA successors. Although the Die Kelders MSA human teeth tend to be somewhat larger, they are morphologically similar to modern African homologues, and they exhibit several features that tend to distinguish modern Africans among other populations. These teeth may be added to the small fossil sample that attests to the morphological modernity of the MSA inhabitants of southern Africa.

The dating of the 6 to 8-m shoreline in southern Africa as early Pleistocene prompted a reassessment of evidence from archaeological cave sites on the south coast of the Cape Province which had suggested that this shoreline is of last interglacial age. The successions in the caves at Klasies River Mouth and Die Kelders have been misinterpreted. In fact, they confirm a pre-last interglacial age for this feature. These sites, together with Herolds Bay Cave, indicate that in southern Africa the only last interglacial shoreline above present sea level is at about 4 m, and that it dates from isotope substage 5e.

This book is for students and practitioners of archaeology. It offers an introductory survey of all the applications of mathematical and statistical techniques to their work. These applications are increasingly concerned with computerized data classification and quantification, and their effect is to reduce the level of uncertainty in the interpretation of the evidence that time and chance have left. Any archaeologist wanting to find out what these new methods have to offer has hitherto been forced to search for information in the specialist handbooks, conference proceedings, and review articles of his own, and very often of other, disciplines. This book brings the information conveniently together, so far as it pertains to archaeology, and permits an assessment of its relevance and quality. Those who have been daunted by the specialist knowledge apparently demanded will now be able to acquire a thorough grasp of principles and practices. Only an elementary knowledge of mathematics is presumed throughout. Part 1 provides a brief introduction to basic concepts in archaeology and mathematics. Part 2 relates the standard archaeological techniques and procedures to mathematics; it concentrates on numerical approaches best suited to archaeological practices. Part 3 examines various automatic seriation techniques and discusses further work that is coming to play an essential part in the development of archaeology.