The paper “For our world without sound. The opportunistic debitage in the Italian context: a methodological evaluation of the lithic assemblages of Pirro Nord, Cà Belvedere di Montepoggiolo, Ciota Ciara cave and Riparo Tagliente” [1] submitted by M. Carpentieri and M. Arzarello is a welcome addition to a growing number of studies focusing on flaking methods showing little to no core preparation, e.g., [2–4]. These flaking methods are often overlooked or seen as ‘simple’, which, in a Middle Palaeolithic context, sometimes leads to a dichotomy of Levallois vs. non-Levallois debitage (e.g., see discussion in [2]).

The authors address this topic by first providing a definition for ‘opportunistic debitage’, derived from the definition of the ‘Alternating Surfaces Debitage System’ (SSDA, [5]). At the core of the definition is the adaptation to the characteristics (e.g., natural convexities and quality) of the raw material. This is one main challenge in studying this type of debitage in a consistent way, as the opportunistic debitage leads to a wide range of core and flake morphologies, which have sometimes been interpreted as resulting from different technical behaviours, but which the authors argue are part of a same ‘methodological substratum’ [1].

This article aims to further characterise the ‘opportunistic debitage’. The study relies on four archaeological assemblages from Italy, ranging from the Lower to the Upper Pleistocene, in which the opportunistic debitage has been recognised. Based on the characteristics associated with the occurrence of the opportunistic debitage in these assemblages, an experimental replication of the opportunistic debitage using the same raw materials found at these sites was conducted, with the aim to gain new insights into the method. Results show that experimental flakes and cores are comparable to the ones identified as resulting from the opportunistic debitage in the archaeological assemblage, and further highlight the high versatility of the opportunistic method.

One outcome of the experimental replication is that a higher flake productivity is noted in the opportunistic centripetal debitage, along with the occurrence of 'predetermined-like' products (such as déjeté points). This brings the authors to formulate the hypothesis that the opportunistic debitage may have had a role in the process that will eventually lead to the development of Levallois and Discoid technologies. How this articulates with for example current discussions on the origins of Levallois technologies (e.g., [6–8]) is an interesting research avenue. This study also touches upon the question of how the implementation of one knapping method may be influenced by the broader technological knowledge of the knapper(s) (e.g., in a context where Levallois methods were common vs a context where they were not). It makes the case for a renewed attention in lithic studies for flaking methods usually considered as less behaviourally significant.

[1] Carpentieri M, Arzarello M. 2020. For our world without sound. The opportunistic debitage in the Italian context: a methodological evaluation of the lithic assemblages of Pirro Nord, Cà Belvedere di Montepoggiolo, Ciota Ciara cave and Riparo Tagliente. OSF Preprints, doi:10.31219/osf.io/2ptjb

[2] Bourguignon L, Delagnes A, Meignen L. 2005. Systèmes de production lithique, gestion des outillages et territoires au Paléolithique moyen : où se trouve la complexité ? Editions APDCA, Antibes, pp. 75–86. Available: https://halshs.archives-ouvertes.fr/halshs-00447352

[3] Arzarello M, De Weyer L, Peretto C. 2016. The first European peopling and the Italian case: Peculiarities and “opportunism.” Quaternary International, 393: 41–50. doi:10.1016/j.quaint.2015.11.005

[4] Vaquero M, Romagnoli F. 2018. Searching for Lazy People: the Significance of Expedient Behavior in the Interpretation of Paleolithic Assemblages. J Archaeol Method Theory, 25: 334–367. doi:10.1007/s10816-017-9339-x

[5] Forestier H. 1993. Le Clactonien : mise en application d’une nouvelle méthode de débitage s’inscrivant dans la variabilité des systèmes de production lithique du Paléolithique ancien. Paléo, 5: 53–82. doi:10.3406/pal.1993.1104

[6] Moncel M-H, Ashton N, Arzarello M, Fontana F, Lamotte A, Scott B, et al. 2020. Early Levallois core technology between Marine Isotope Stage 12 and 9 in Western Europe. Journal of Human Evolution, 139: 102735. doi:10.1016/j.jhevol.2019.102735

[7] White M, Ashton N, Scott B. 2010. The emergence, diversity and significance of the Mode 3 (prepared core) technologies. Elsevier. In: Ashton N, Lewis SG, Stringer CB, editors. The ancient human occupation of Britain. Elsevier. Amsterdam, pp. 53–66.

[8] White M, Ashton N. 2003. Lower Palaeolithic Core Technology and the Origins of the Levallois Method in North‐Western Europe. Current Anthropology, 44: 598–609. doi:10.1086/377653

The paper entitled “Tool types and the establishment of the Late Palaeolithic (Later Stone Age) cultural taxonomic system in the Nile Valley”  submitted by A. Leplongeon offers a review of the many cultural taxonomic in use for the prehistory – especially the Late Palaeolithic/Late Stone Age – of the Nile Valley (Leplongeon 2023). This paper was first developed for a special conference session convened at the EAA annual meeting in 2021 and is intended for an edited volume on the topic of typology and taxonomy in archaeology.

Issues of cultural taxonomy have recently risen to the forefront of archaeological debate (Reynolds and Riede 2019; Ivanovaitė et al. 2020; Lyman 2021). Archaeological systematics, most notably typology, have roots in the research history of a particular region and period (e.g. Plutniak 2022); commonly, different scholars employ different and at times incommensurable systems, often leading to a lack of clarity and inter-regional interoperability. African prehistory is not exempt from this debate (e.g. Wilkins 2020) and, in fact, such a situation is perhaps nowhere more apparent than in the iconic Nile Valley. The Nile Valley is marked by a complex colonial history and long-standing archaeological interest from a range of national and international actors. It is also a vital corridor for understanding human dispersals out of and into Africa, and along the North African coastal zone. As Leplongeon usefully reviews, early researchers have, as elsewhere, proposed a variety of archaeological cultures, the legacies of which still weigh in on contemporary discussions. In the Nile Valley, these are the Kubbaniyan (23.5-19.3 ka cal. BP), the Halfan (24-19 ka cal. BP), the Qadan (20.2-12 ka cal BP), the Afian (16.8-14 ka cal. BP) and the Isnan (16.6-13.2 ka cal. BP) but their temporal and spatial signatures remain in part poorly constrained, or their epistemic status debated. Leplongeon’s critical and timely chronicle of this debate highlights in particular the vital contributions of the many female prehistorians who have worked in the region – Angela Close (e.g. 1978; 1977) and Maxine Kleindienst (e.g. 2006) to name just a few of the more recent ones – and whose earlier work had already addressed, if not even solved many of the pressing cultural taxonomic issues that beleaguer the Late Palaeolithic/Later Stone Age record of this region. 

Leplongeon and colleagues (Leplongeon et al. 2020; Mesfin et al. 2020) have contributed themselves substantially to new cultural taxonomic research in the wider region, showing how novel quantitative methods coupled with research-historical acumen can flag up and overcome the shortcomings of previous systematics. Yet, as Leplongeon also notes, the cultural taxonomic framework for the Nile Valley specifically has proven rather robust and does seem to serve its purpose as a broad chronological shorthand well. By the same token, she urges due caution when it comes to interpreting these lithic-based taxonomic units in terms of past social groups. Cultural systematics are essential for such interpretations, but age-old frameworks are often not fit for this purpose. New work by Leplongeon is likely to not only continue the long tradition of female prehistorians working in the Nile Valley but also provides an epistemologically and empirically more robust platform for understanding the social and ecological dynamics of Late Palaeolithic/Later Stone Age communities there.

Bibliography 

Close, Angela E. 1977. The Identification of Style in Lithic Artefacts from North East Africa. Mémoires de l’Institut d’Égypte 61. Cairo: Geological Survey of Egypt.

Close, Angela E. 1978. “The Identification of Style in Lithic Artefacts.” World Archaeology 10 (2): 223–37. https://doi.org/10.1080/00438243.1978.9979732

Ivanovaitė, Livija, Serwatka, Kamil, Steven Hoggard, Christian, Sauer, Florian and Riede, Felix. 2020. “All These Fantastic Cultures? Research History and Regionalization in the Late Palaeolithic Tanged Point Cultures of Eastern Europe.” European Journal of Archaeology 23 (2): 162–85. https://doi.org/10.1017/eaa.2019.59

Kleindienst, M. R. 2006. “On Naming Things: Behavioral Changes in the Later Middle to Earlier Late Pleistocene, Viewed from the Eastern Sahara.” In Transitions Before the Transition. Evolution and Stability in the Middle Paleolithic and Middle Stone Age, edited by E. Hovers and Steven L. Kuhn, 13–28. New York, NY: Springer.

Leplongeon, Alice. 2023. “Tool Types and the Establishment of the Late Palaeolithic (Later Stone Age) Cultural Taxonomic System in the Nile Valley.” https://doi.org/10.5281/zenodo.8115202

Leplongeon, Alice, Ménard, Clément, Bonhomme, Vincent and Bortolini, Eugenio. 2020. “Backed Pieces and Their Variability in the Later Stone Age of the Horn of Africa.” African Archaeological Review 37 (3): 437–68. https://doi.org/10.1007/s10437-020-09401-x

Lyman, R. Lee. 2021. “On the Importance of Systematics to Archaeological Research: The Covariation of Typological Diversity and Morphological Disparity.” Journal of Paleolithic Archaeology 4 (1): 3. https://doi.org/10.1007/s41982-021-00077-6

Mesfin, Isis, Leplongeon, Alice, Pleurdeau, David, and Borel, Antony. 2020. “Using Morphometrics to Reappraise Old Collections: The Study Case of the Congo Basin Middle Stone Age Bifacial Industry.” Journal of Lithic Studies 7 (1): 1–38. https://doi.org/10.2218/jls.4329

Plutniak, Sébastien. 2022. “What Makes the Identity of a Scientific Method? A History of the ‘Structural and Analytical Typology’ in the Growth of Evolutionary and Digital Archaeology in Southwestern Europe (1950s–2000s).” Journal of Paleolithic Archaeology 5 (1): 10. https://doi.org/10.1007/s41982-022-00119-7

Reynolds, Natasha, and Riede, Felix. 2019. “House of Cards: Cultural Taxonomy and the Study of the European Upper Palaeolithic.” Antiquity 93 (371): 1350–58. https://doi.org/10.15184/aqy.2019.49

Wilkins, Jayne. 2020. “Is It Time to Retire NASTIES in Southern Africa? Moving Beyond the Culture-Historical Framework for Middle Stone Age Lithic Assemblage Variability.” Lithic Technology 45 (4): 295–307. https://doi.org/10.1080/01977261.2020.1802848

This article “Sorghum and finger millet cultivation during the Aksumite period: insights from ethnoarchaeological modelling and microbotanical analysis”, submitted by Ruiz-Giralt and colleagues (2023a), presents an innovative attempt to address the lack of palaeobotanical data concerning ancient agricultural strategies in the northern Horn of Africa. In lieu of well-preserved macrobotanical remains, an especial problem for C4 crop species, these authors leverage microbotanical remains (phytoliths), in combination with ethnoarchaeologically-informed agroecology models to investigate finger millet and sorghum cultivation during the period of the Aksumite Kingdom (c. 50 BCE – 800 CE).

Both finger millet and sorghum have played important roles in the subsistence of the Horn region, and throughout much of the rest of Africa and the world in the past. The importance of these drought-resistant and adaptable crops is likely to increase as we move into a warmer, drier world. Yet their histories of cultivation are still only approximately sketched due to a paucity of well-preserved remains from archaeological sites - for example, debate continues as to the precise centre of their domestication. Recent studies of phytoliths (by these and other authors) are demonstrating the likely continuous presence of these crops from the pre-Aksumite period. However, phytoliths are diagnostic only to broad taxonomic levels, and cannot be used to securely identify species. To supplement these observations, Ruiz-Giralt et al. deploy models (previously developed by this team: Ruiz-Giralt et al., 2023b) that incorporate environmental variables and ethnographic data on traditional agrosystems. They evaluate the feasibility of different agricultural regimes around the locations of numerous archaeological sites distributed across the highlands of northern Ethiopia and southern Eritrea.

Their results indicate the general viability of finger millet and sorghum cultivation around archaeological settlements in the past, with various regions displaying greater-or-lesser suitability at different distances from the site itself. The models also highlight the likelihood of farmers utilising extensive-rainfed regimes, given low water and soil nutrient requirements for these crops. The authors discuss the results with respect to data on phytolith assemblages, particularly at the site of Ona Adi. They conclude that Aksumite agriculture very likely included the cultivation of finger millet and sorghum, as part of a broader system of rainfed cereal cultivation.

Ruiz-Giralt et al. argue, and have demonstrated, that ethnoarchaeologically-informed models can be used to generate hypotheses to be evaluated against archaeological data. The integration of many diverse lines of information in this paper certainly enriches the discussion of agricultural possibilities in the past, and the use of a modelling framework helps to formalise the available hypotheses. However, they emphasise that modelling approaches cannot be pursued in lieu of rigorous archaeobotanical studies but only in tandem - a greater commitment to archaeobotanical sampling is required in the region if we are to fully detail the histories of these important crops.

References

Ruiz-Giralt, A., Beldados, A., Biagetti, S., D’Agostini, F., D’Andrea, A. C., Meresa, Y. and Lancelotti, C. (2023a). Sorghum and finger millet cultivation during the Aksumite period: insights from ethnoarchaeological modelling and microbotanical analysis. Zenodo, 7859673, ver. 3 peer-reviewed and recommended by Peer Community in Archaeology. https://doi.org/10.5281/zenodo.7859673

Ruiz-Giralt, A., Biagetti, S., Madella, M. and Lancelotti, C. (2023b). Small-scale farming in drylands: New models for resilient practices of millet and sorghum cultivation. PLoS ONE 18, e0268120. https://doi.org/10.1371/journal.pone.0268120