"Recent investigations into the origins of symbolism indicate that personal ornaments in the form of perforated marine shell beads were used in the Near East, North Africa, and SubSaharan Africa at least 35 ka earlier than any personal ornaments in Europe. Together with instances of pigment use, engravings, and formal bone tools, personal ornaments are used to support an early emergence of behavioral modernity in Africa, associated with the origin of our species and significantly predating the timing for its dispersal out of Africa. Criticisms have been leveled at the low numbers of recovered shells, the lack of secure dating evidence, and the fact that documented examples were not deliberately shaped. In this paper, we report on 25 additional shell beads from four Moroccan Middle Paleolithic sites. We review their stratigraphic and chronological contexts and address the issue of these shells having been deliberately modified and used. We detail the results of comparative analyses of modern, fossil, and archaeological assemblages and microscopic examinations of the Moroccan material. We conclude that
Nassarius shells were consistently used for personal ornamentation in this region at the end of the last interglacial. Absence of ornaments at Middle Paleolithic sites postdating Marine Isotope Stage 5 raises the question of the possible role of climatic changes in the disappearance of this hallmark of symbolic behavior before its reinvention 40 ka ago. Our results suggest that further inquiry is necessary into the mechanisms of cultural transmission within early
Homo sapiens populations."
and
"To test these scenarios, it is necessary to identify and date the occurrences of innovations that may signal the acquisition of modern cultural traits. Symbolic material culture, representing the ability to share and transmit coded information within and across groups, is an indication of modern cognition (
1,
2,
5,
13,
16–
18). This statement is particularly true when the physical body is used as a means of display. Beadwork represents a technology specific to humans used to convey social information to other individuals through a shared symbolic language (
17,
19). Until recently, the invention of personal ornaments was considered synonymous with the colonization of Europe by AMH some 40 ka (
20,
21). Most now accept that marine shells were used as beads in the Near East, North Africa, and SubSaharan Africa at least 35 ka earlier. Five sites—Qafzeh and Skhul in Israel, Oued Djebbana in Algeria, Taforalt in Morocco, and Blombos Cave in South Africa—have yielded evidence of an ancient use of personal ornaments. Perforated shells from Qafzeh consist of
Glycymeris insubrica bivalves (
6), those from the following three aforementioned sites consist of
Nassarius gibbosulus (
Ng) (
7,
8) and those from Blombos are
Nassarius kraussianus, common in South African estuaries (
5). Two other sites, Sibudu Cave and Border Cave, South Africa (
9), have yielded less compelling evidence for early bead use. No unequivocal personal ornaments reliably dated to approximately 70–40 ka are documented in Africa and Eurasia (
9). Around 40 ka, beads reappear almost simultaneously in both Africa and the Near East and for the first time in Europe and Asia. In Africa they take the form of ostrich eggshell beads and stone rings (
2,
5,
9,
22). In Europe they are associated with both Neanderthals and AMH (
10,
13,
18,
19) and take the form of dozens of discrete, regionally patterned types (
19). In Asia, a dozen Early Upper Paleolithic sites from Siberia have yielded a wide variety of personal ornament types (
13) as old as the earliest European Upper Paleolithic (40 ka)."
and
"Evidence presented here contradicts the view that instances of symbolic mediated behavior dated before 50 ka should be discarded due to the paucity of sites with shell beads, provenance, and deficient modifications of the latter, limited dating evidence, and inadequate contextual information. Our results and already published data indicate that marine shells were used as personal ornaments in North and South Africa and in the Near East during the last interglacial. The data presented here raises to at least nine the number of MP sites that have yielded personal ornaments made of marine shells, raises to several dozen the number of recovered perforated shells, and raises to five the number of shell species used. Even if the number of beads recovered at some of the sites from North Africa is admittedly low, behavioral and chronological consistencies suggest the evidence will inevitably grow, qualitatively and quantitatively, to encompass more sites, types of beads, and, possibly, a wider geographic area. The view that these beads represent negligible evidence because they are not manufactured is difficult to accept in the light of what we know about personal ornament use in past and recent human societies and in light of the results presented here. A number of archaeologically recognized beadworking traditions are exclusively or almost exclusively represented by marine shells. This situation is observed, for example, at the beginning of the Upper Paleolithic in the Mediterranean region (
10,
11). As in North Africa, a single perforation bearing no other compelling evidence of human intervention is the only modification observed on the vast majority of Upper Paleolithic shell beads. Many ethnographically documented beadworking traditions exclusively use unmodified beads or minimally modified elements of the natural word (feathers, shells, bone, teeth, etc.) (
42). Whether used in isolation or integrated into complex arrangements, ornaments made of slightly modified natural objects often represent, by the direct link they establish between the natural world and the meaning attributed to them, quintessential symbolic items. A peculiarity of these objects is that when available only in distant regions, their acquisition depends on organized exchange networks, and value is ascribed to their possession. Such networks are instrumental in the trade of other items, as well as genetic and cultural exchange. It is striking in this respect: three of the Moroccan sites yielding
Na beads are located 40–60 km inland; the only site reported in Algeria, Oued Djebbana, is 190 km from the sea; the number of recovered beads is often relatively small; and at Taforalt unperforated shells are also documented. This pattern is precisely what one would expect if the presence of
Na at inland sites was the archaeological signature of networks linking coastal areas and inland regions. A supplementary reason for discarding the lack of manufacture argument is based on the observations presented here that suggest that MP shell beads were deliberately perforated. The anthropogenic origin of the perforations on MP shells has so far been inferred from the rarity in natural assemblages of the perforation types recorded on the archaeological shells and the results of experimental piercing of the shell (
5) that produced, with some techniques, perforations comparable in location, size, shape, and position of microchipping to those observed on archeological specimens. The marks recorded on two
Na from Taforalt confirm what was previously suggested based on the inner position of the microchipping, that is, that the perforations on these
Na were made by vigorously punching the body whorl with a robust lithic point.
Analysis of the amount, spatial distribution and degree of alteration by heating of other categories of burnt items found in the same layers (lithics, bone, and land snails) is necessary to verify the hypothesis that
Na were intentionally heated to change their color. Identification of usewear posterior to heating indicates that intentional heating is a viable hypothesis that requires further investigation.
The presence of pigment residues on many well-preserved shell beads from MP sites links bead and pigment use, further reinforcing the argument for their interconnected symbolic value (
5). Intensely developed use-wear suggests beads were used for a long period although the length of use and the way they were strung remain to be determined. "
http://www.pnas.org/content/106/38/16051.full