An Early Bone Tool Industry from the Middle Stone Age at Blombos Cave, South Africa: Implications for the Origins of Modern Huma
Total Page:16
File Type:pdf, Size:1020Kb
Christopher S. An early bone tool industry from the Henshilwood Middle Stone Age at Blombos Cave, South Department of Anthropology, Africa: implications for the origins of SUNY at Stony Brook, Stony modern human behaviour, symbolism and Brook, NY 11794-4364, U.S.A. & South African language Museum (Iziko Museums of Cape Town), Queen Victoria Twenty-eight bone tools were recovered in situ from ca. 70 ka year old Street, Cape Town, 8000, Middle Stone Age levels at Blombos Cave between 1992 and 2000. South Africa. E-mail: These tools are securely provenienced and are the largest collection to [email protected] come from a single African Middle Stone Age site. Detailed analyses show that tool production methods follow a sequence of deliberate technical choices starting with blank production, the use of various Francesco d’Errico shaping methods and the final finishing of the artefact to produce Institut de Prehistoire at de ‘‘awls’’ and ‘‘projectile points’’. Tool production processes in the Geologie du Quaternaire, Middle Stone Age at Blombos Cave conform to generally accepted UMR 5808 of the CNRS, descriptions of ‘‘formal’’ techniques of bone tool manufacture. Com- Av. des Facultes, 33405, parisons with similar bone tools from the Later Stone Age at Blombos Talence, France. E-mail: Cave, other Cape sites and ethnographic collections show that [email protected] although shaping methods are different, the planning and execution of bone tool manufacture in the Middle Stone Age is consistent with Curtis W. Marean that in the late Holocene. Institute of Human Origins, The bone tool collection from Blombos Cave is remarkable Department of Anthropology, because bone tools are rarely found in African Middle or Later Stone Arizona State University, Age sites before ca. 25 ka. Scarcity of early bone tools is cited as one PO Box 872402, Tempe, AZ strand of evidence supporting models for nonmodern behaviour 85287-2402, U.S.A. E-mail: linked to a lack of modern technological or cognitive capacity before [email protected] ca. 50 ka. Bone artefacts are a regular feature in European sites after ca. 40 ka, are closely associated with the arrival of anatomically Richard G. Milo modern humans and are a key behavioural marker of the Upper Department of Geography, Palaeolithic ‘‘symbolic explosion’’ linked to the evolution of modern Economics and Anthropology, behaviour. Chicago State University, Taken together with recent finds from Klasies River, Katanda and 9501 S. King Drive, Chicago, other African Middle Stone Age sites the Blombos Cave evidence for IL 60628-1598, U.S.A. formal bone working, deliberate engraving on ochre, production of E-mail: [email protected] finely made bifacial points and sophisticated subsistence strategies is turning the tide in favour of models positing behavioural modernity in Africa at a time far earlier than previously accepted. Royden Yates 2001 Academic Press South African Museum (Iziko Museums of Cape Town), Queen Victoria Street, Cape Town, 8000, South Africa. E-mail: [email protected] Received 19 April 2001 Revision received 29 June 2001 and accepted 19 July 2001 Keywords: Middle Stone Age, bone tools, symbolism, Journal of Human Evolution (2001) 41, 631–678 behaviour, South Africa, doi:10.1006/jhev.2001.0515 Blombos Cave. Available online at http://www.idealibrary.com on 0047–2484/01/120631+48$35.00/0 2001 Academic Press 632 . ET AL. Introduction In this paper we present an analysis of the largest known MSA bone tool collection By around the early 1990s there was a excavated from Blombos Cave (BBC), general assumption that African Middle South Africa. In 1992 a single worked and Stone Age people, like their Middle Palaeo- polished bone point was recovered during lithic counterparts, did not make bone tools preliminary excavation of the MSA levels (Clarke, 1989; Thackeray, 1992), possibly dated at ca. 70 ka (Henshilwood et al., because they did not have the mental ca- 2001; and see below). Expanded exca- pacity (e.g. Klein, 1989b; for a contra view vations in 1997 produced 14 MSA bone see Mellars & Stringer, 1989). This assump- tools (Henshilwood & Sealy, 1997), and tion was largely based on the infrequency of between 1998–2000 13 more were recov- formal bone tool finds from Middle Stone ered. All the BBC MSA bone tools show Age (MSA) contexts in Africa prior to evidence of deliberate shaping to create tools 1990 (see Clark et al., 1950; Clark, 1959; of various sizes and forms; most are pol- Wendorf & Schild, 1974; Marks, 1968; ished, either intentionally or from use-wear. Beaumont et al., 1978; Singer & Wymer, The BBC bone tool collection clearly dem- 1982; Mason, 1988) and because the dating onstrates that MSA people had the capacity and secure context of these few finds was to perceive bone as a raw material, under- open to question (e.g. Volman, 1984; Singer stand its working properties and fashion it as & Wymer, 1982; Klein, 1989b). required using a variety of techniques to In Eurasia shaped bone tools are virtually produce shaped (formal) artefacts for unknown at sites pre-dating 40 ka but diverse applications. are fairly common in the region after this date (Hahn, 1988; Camps-Fabrer, 1988; Modern human behaviour and bone Mellars, 1989b; Knecht, 1993; Hahn, 1995; tools Otte, 1995; Oliva, 1995; d’Errico et al., 1998; Christensen, 1999; d’Errico & Current and past debate over the origins and Laroulandie, 2000; Villa & d’Errico, 2001). development of bone tool technology are It seemed, from the evidence, that bone tool part of a far larger and equally heated technology occurred first in Eurasia and was debate—the origins of modern human only adopted or developed in Africa at a behaviour. Genetic and fossil evidence much later date. Bone tools only became strongly suggests anatomically modern a regular feature at African sites in the Later humans, Homo sapiens, evolved in Africa at Stone Age (LSA) post ca. 25 ka (for a fuller ca. 300–150 ka and by ca. 35–30 ka were discussion see McBrearty & Brooks, 2000). effectively established in all areas of the Old The discovery in the early 1990s of World (Vigilant et al., 1991; Templeton, barbed and unbarbed bone points at the 1992; Mellars, 1993; Stringer, 1993; Katanda sites in the Semliki Valley, D.R. Stoneking et al., 1993; Deacon, 1993, Congo, dated at ca. 75 ka (Yellen et al., 1998b; Foley, 1998; Zilha˜o&d’Errico, 1995; Brooks et al., 1995; McBrearty 1999; but for a contra view see Wolpoff et al., & Brooks, 2000; Feathers & Migliorini, 1984; Wolpoff, 1989, 1996). Correlating 2001), generated considerable debate over anatomical with behavioural modernity in their actual age (Ambrose, 1998) and Africa is more problematic. Due, in part, to provenience (Klein, 1999; see McBrearty & the lack of reliable and/or dated archaeologi- Brooks for a fuller discussion), but are the cal evidence from most African Mid and first major find to provide strong evidence Late Pleistocene sites, some researchers for early bone working in Africa. consider the Middle Palaeolithic (MP) to 633 Upper Palaeolithic (UP) transition in in south-east Africa (Foley & Lahr, Eurasia the benchmark for constructing 1997), the Aterian in North Africa (Hublin, ‘‘modern’’ behavioural models (Klein, 1993; Hajraoui, 1994) and evidence 1989a,b, 1994b, 1995; Mellars, 1989a,b, from Namibian sites (Vogelsang, 1996). 1991, 1993, 1996; Ambrose & Lorenz, Adherents or near adherents to early African 1990; Ambrose, 1998). The tenets of these ‘‘modern’’ type behaviour models have essentially eurocentric models is that early diverse views on the role, or presence vs. ‘‘modern’’ behaviour—the ‘‘behavioural absence, of bone tools in the MSA. Clark revolution’’—equates with H. sapiens and (1989) believes MSA people had the mental the MP–UP transition at ca. 40–30 ka and capacity for bone working but preferred that the African equivalent is the MSA/LSA wood as it is easier to work. Thackeray’s transition at ca. 50–40 ka (Ambrose, 1998; (1992) observation is that bone was simply Klein, 1989a,b, 1992, 1995, 1999, 2000). not an important source of raw material in Anatomically modern humans in Africa and the MSA. Whether important or not, West Asia during the MSA/MP are regarded McBrearty & Brooks (2000) argue that by some researchers as behaviourally non- carving and polishing bone was not beyond modern until the early LSA/UP at ca. 50– the capabilities of the maker of a levallois 40 ka (Binford, 1984; Klein, 1989a,b, 1992, flake or, in our opinion, a Still Bay bifacially 1994b, 1995; Ambrose & Lorenz, 1990; worked stone point. Ambrose, 1998). Klein (1999, 2000) argues What is the evidence for bone technology further that the shift to fully modern behav- in the African MSA or earlier? Shaft frag- iour at ca. 50–40 ka is linked to an advan- ments recovered from Pliocene levels at tageous genetic mutation. The absence or Swartkrans, Sterkfontein and Driemolen presence of formal bone tools is frequently (Brain & Shipman, 1993; Keyser et al., cited as a marker for assessing modern 2000) show wear consistent with digging behaviour during the MP/UP transition termite mounds (Backwell & d’Errico, (Mellars, 1989a,b, 1991, 1993) and the 2001) but this is best described as ad hoc African MSA (Klein, 1989a,b, 1992, bone use. A bone point and utilized ivory 1994b, 1995; Ambrose, 1998). Interest- pieces come from the Kabwe site (Clark ingly, Neanderthals are known to have et al., 1950) but their age and association manufactured bone tools in Eurasia during with faunal and hominid remains is ques- the late MP (d’Errico et al., 1998). tionable (McBrearty & Brooks, 2000). A In contrast to the above ‘‘linear’’, tem- bone point, purportedly from the lowest porally restricted models, proponents of a HP levels at Klasies River (KR) dated at ‘‘mosaic’’ approach suggest elements indica- ca.