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Examining Neanderthal and carnivore occupations of Teixoneres Cave (Moià, Barcelona, Spain) using archaeostratigraphic and intra-site spatial analysis

Zilio, Leandro, Hammond, Heidi, Karampaglidis, Theodoros, Sánchez-Romero, Laura, Blasco, Ruth, Rivals, Florent, Rufà, Anna, Picin, Andrea, Chacón, M. Gema, Demuro, Martina, Arnold, Lee J., Rosell, Jordi·2021·Scientific Reports
DOI 10.1038/s41598-021-83741-9PMC PMC7900232
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Abstract

Teixoneres Cave (Moià, Barcelona, Spain) is a reference site for Middle Palaeolithic studies of the Iberian Peninsula. The cave preserves an extensive stratigraphic sequence made up of eight units, which is presented in depth in this work. The main goal of this study is to undertake an initial spatial examination of Unit III, formed during Marine Isotope Stage 3, with the aim of understanding spatial organization and past activities developed by Neanderthals and carnivores (bears, hyenas and smaller carnivores). The total sample analysed includes 38,244 archaeological items and 5888 limestone blocks. The application of GIS tools allows us to clearly distinguish three geologically-defined stratigraphic subunits. Unit III has been previously interpreted as a palimpsest resulting from alternating occupation of the cave by human groups and carnivores. The distribution study shows that faunal specimens, lithic artefacts, hearths and charcoal fragments are significantly concentrated at the entrance of the cave where, it is inferred, hominins carried out different activities, while carnivores preferred the sheltered zones in the inner areas of the cave. The results obtained reveal a spatial pattern characterized by fire use related zones, and show that the site was occupied by Neanderthals in a similar and consistent way throughout the ˃ 7000 years range covered by the analysed subunits. This spatial pattern is interpreted as resulting from repeated short-term human occupations.

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Research works printed but not linked: 96

  1. Canals, A., Vallverdú, J. & Carbonell, E. New archaeo-stratigraphic data for the TD6 level in relation to Homo antecessor (Lower Pleistocene) at the site of Atapuerca, North-central Spain. Geoarchaeology 18(5), 481–504 (2003). · DOI
  2. Enloe, J. G. Geological processes and site structure: Assessing integrity at a Late Paleolithic open- air site in northern France. Geoarchaeology 216(6), 523–540 (2006). · DOI
  3. Bailey, G. & Galanidou, N. Caves, palimpsests and dwelling spaces: Examples from the Upper Palaeolithic of south-east Europe. World Archaeol. 41(2), 215–241 (2009). · DOI
  4. Henry, D. O. Thepalimpsestproblem,hearthpatternanalysis,andmiddlepaleolithicsitestructure. Quat. Int. 247, 246–266 (2012). · DOI
  5. Bargalló, A., Gabucio, M. J. & Rivals, F. Puzzling out a palimpsest: Testing an interdisciplinary study in level O of Abric Romaní. Quat. Int. 417, 51–65 (2016). · DOI
  6. Martínez-Moreno, J., Torcal, R. M., Sunyer, M. R. & Benito-Calvo, A. From site formation processes to human behaviour: Towards a constructive approach to depict palimpsests in Roca dels Bous. Quat. Int. 417, 82–93 (2016). · DOI
  7. Sañudo, P., Blasco, R. & Peris, J. F. Site formation dynamics and human occupations at Bolomor Cave (Valencia, Spain): An archaeostratigraphic analysis of levels I to XII (100–200 ka). Quat. Int. 417, 94–104 (2016). · DOI
  8. Spagnolo, V. et al. Between hearths and volcanic ash: The SU 13 palimpsest of the Oscurusciuto rock shelter (Ginosa-Southern Italy): Analytical and interpretative questions. Quat. Int. 417, 105–121 (2016). · DOI
  9. Sánchez-Romero, L., Benito-Calvo, A., Pérez-González, A. & Santonja, M. Assessment of accumulation processes at the Middle Pleistocene site of Ambrona (Soria, Spain). Density and orientation patterns in spatial datasets derived from excavations conducted from 1960s to the Present. PLoS ONE 11(12), e0167595. https://doi.org/10.1371/journal.pone.0167595 (2016). · DOI
  10. Sánchez-Romero, L. et al. Breaking the palimpsest: an approach to the cultural sequence of Neanderthal occupation at the Navalmaíllo rockshelter, Pinilla del Valle (Spain). Trab. Prehist. 74(2), 225–237 (2017). · DOI
  11. Rosell, J. et al. A resilient landscape at Teixoneres Cave (MIS 3; Moià, Barcelona, Spain): The Neanderthals as disrupting agent. Quat. Int. 435, 195–210 (2017). · DOI
  12. Gabucio, M. J. et al. Unraveling a Neanderthal palimpsest from a zooarcheological and taphonomic perspective. Archaeol. Anthropol. Sci. 10(1), 197–222 (2018). · DOI
  13. Bailey, G. N. Timeperspectives,palimpsestsandthearchaeologyoftime. J. Anthropol. Archaeol. 26, 198–223 (2007). · DOI
  14. Stern, N. The structure of the Lower Pleistocene archaeological record: A case study from the Koobi Fora formation. Curr. Anthropol. 34, 201–225 (1993). · DOI
  15. Stern, N. The implications of time-averaging for reconstructing the land-use patterns of early tool-using hominids. J. Hum. Evol. 27, 89–105 (1994). · DOI
  16. Vaquero, M. & Pastó, I. The definition of spatial units in Middle Palaeolithic sites: The hearth-related assemblages. J. Archaeol. Sci. 28(11), 1209–1220 (2001). · DOI
  17. Goldberg, P. & MacPhail, R. Practical and Theoretical Geoarchaeology (Blackwell Science Ltd., Oxford, 2006).
  18. Camarós, E. et al. Large carnivores as taphonomic agents of space modification: An experimental approach with archaeological implications. J. Archaeol. Sci. 40(2), 1361–1368 (2013). · DOI
  19. Arilla, M., Rosell, J. & Blasco, R. A neo-taphonomic approach to human campsites modified by carnivores. Sci. Rep. 10, 6659. https://doi.org/10.1038/s41598-020-63431-8 (2020). · DOI
  20. Stein, J. K. Earthworm activity: A source of potential disturbance of archaeological sediments. Am. Ant. 48(2), 277–289 (1983). · DOI
  21. Erlandson, J. M. A case study in faunalturbation: Delineating the effects of the burrowing pocket gopher on the distribution of archaeological materials. Am. Ant. 49(4), 785–790 (1984). · DOI
  22. Binford, L. R., Mills, M. G. L. & Stone, N. M. Hyena scavenging behavior and its implications for the interpretation of faunal assemblages from FLK 22 (the Zinj floor) at Olduvai Gorge. J. Anthropol. Archaeol. 7(2), 99–135 (1988). · DOI
  23. Blumenschine, R. J. An experimental model of the timing of hominid and carnivore influence on archaeological bone assemblages. J. Archaeol. Sci. 15(5), 483–502 (1988). · DOI
  24. Marean, C. W., Spencer, L. M., Blumenschine, R. J. & Capaldo, S. D. Captive hyena bone choice and destruction, the schlepp effect, and Olduvai Gorge archaeofaunas. J. Archaeol. Sci. 18, 101–121 (1992). · DOI
  25. Marean, C. W. & Bertino, L. Intrasite spatial analysis of bone: Subtracting the effect of secondary carnivore consumers. Am. Ant. 59(4), 748–768 (1994). · DOI
  26. Sánchez-Romero, L. et al. New insights for understanding spatial patterning and formation processes of the Neanderthal occupation in the Amalda I cave (Gipuzkoa, Spain). Sci. Rep. 10(1), 8733. https://doi.org/10.1038/s41598-020-65364-8 (2020). · DOI
  27. Rosell, J. & Blasco, R. Home sharing: Carnivores in anthropogenic assemblages of the Middle Pleistocene. J. Taphon. 7(4), 305–324 (2009).
  28. Rosell, J. et al. Las ocupaciones en la Cova de les Teixoneres (Moià, Barcelona): Relaciones espaciales y grado de competencia entre hienas, osos y neandertales durante el Pleistoceno superior. Zona Arqueol. 13, 392–402 (2010).
  29. Rosell, J. et al. A stop along the way: The role of Neanderthal groups at level III of Teixoneres Cave (Moià, Barcelona, Spain). Quat. Revue de l’Association française pour l’étude du Quaternaire 21(2), 139–154 (2010).
  30. Rufà, A., Blasco, R., Rivals, F. & Rosell, J. Leporids as a potential resource for predators (hominins, mammalian carnivores, raptors): An example of mixed contribution from level III of Teixoneres Cave (MIS 3, Barcelona, Spain). C.R. Palevol 13, 665–680 (2014). · DOI
  31. Sánchez-Hernández, C., Rivals, F., Blasco, R. & Rosell, J. Short, but repeated Neanderthal visits to Teixoneres Cave (MIS 3, Barcelona, Spain): A combined analysis of tooth microwear patterns and seasonality. J. Archaeol. Sci. 49, 317–325 (2014). · DOI
  32. Álvarez-Lao, D. J., Rivals, F., Sánchez-Hernández, C., Blasco, R. & Rosell, J. Ungulates from Teixoneres Cave (Moià, Barcelona, Spain): Presence of cold-adapted elements in NE Iberia during the MIS 3. Palaeogeogr. Palaeoclimatol. Palaeoecol. 466, 287–302 (2017). · DOI
  33. Bustos-Pérez, G., Chacón, M. G., Rivals, F., Blasco, R. & Rosell, J. Quantitative and qualitative analysis for the study of Middle Paleolithic retouched artifacts: Unit III of Teixoneres cave (Barcelona, Spain). J. Archaeol. Sci. Rep. 12, 658–672 (2017).
  34. Kuhn, S. L. & Clark, A. E. Artifact densities and assemblage formation: Evidence from Tabun Cave. J. Anthropol. Archaeol. 38, 8–16 (2015). · DOI
  35. Martínez, K. & Rando, J. M. Organización y funcionalidad de la producción lítica en un nivel del Paleolítico Medio del Abric Romaní. Nivel Ja (Capellades, Barcelona). Trab. Prehist. 58(1), 51–70 (2001). · DOI
  36. Vallverdú, J. et al. Sleeping activity area within the site structure of archaic human groups: Evidence from Abric Romaní Level N combustion activity areas. Curr. Anthropol. 51(1), 137–145 (2010). · DOI
  37. Vaquero, M. et al. Time and space in the formation of lithic assemblages: The example of Abric Romaní Level. J. Quat. Int. 247, 162–181 (2012). · DOI
  38. Vaquero, M., Bargalló, A., Chacón, M. G., Romagnoli, F. & Sañudo, P. Lithic recycling in a Middle Paleolithic expedient context: Evidence from the Abric Romaní (Capellades, Spain). Quat. Int. 361, 212–228 (2015). · DOI
  39. Vaquero, M. et al. Movingthings:ComparinglithicandbonerefitsfromaMiddlePaleolithicsite. J. Anthropol. Archaeol. 48, 262–280 (2017). · DOI
  40. Serrat, D. & Albert, J. F. Estudio sedimentológico de los materiales de relleno de la Cova de les Teixoneres. Speleon 20, 63–70 (1973).
  41. Crusafont, M. Le Quaternaire espagnol et sa faune deMammifères. Essai de Synthèse. Anthropos 1, 55–64 (1960).
  42. De Lumley, H. Le Paléolithique inférieur et moyen du Midi méditerranéen dans son cadre géologique, II, Bas-Languedoc, Roussillon, Catalogne. Gallia Préhistoire 5(2), 443–445 (1971).
  43. Guilaine, J., Barbaza, M., Geddes, D. & Vernet, J. L. Prehistoric human adaptations in Catalonia (Spain). J. Field Archaeol. 9(4), 407–416 (1982). · DOI
  44. Picin, A. et al. Neanderthal mobile toolkit in short-term occupations at Teixoneres Cave (Moia, Spain). J. Archaeol. Sci. Rep. 29, 102165 (2020).
  45. Picin, A. et al. Short-term Neanderthal occupations and carnivores in the Northeast of Iberian Peninsula. In Short-Term Occupations in Paleolithic Archaeology: Definition and Interpretation (eds Cascalheira, J. & Picin, A.) 183–213 (Springer, Cham, 2020). · DOI
  46. Álvarez-Lao, D. J. & Méndez, M. Latitudinal gradients and indicator species in ungulate paleoassemblages during the MIS 3 in W Europe. Palaeogeogr. Palaeoclimatol. Palaeoecol. 449, 455–462 (2016). · DOI
  47. Rufà, A., Blasco, R., Rivals, F. & Rosell, J. Who eats whom? Taphonomic analysis of the avian record from the Middle Paleolithic site of Teixoneres Cave (Moià, Barcelona, Spain). Quat. Int. 421, 103–115 (2016). · DOI
  48. Tálamo, S. et al. The radiocarbon approach to Neanderthals in a carnivore den site: A well-defined chronology for Teixoneres Cave (Moià, Barcelona, Spain). Radiocarbon 58, 247–265 (2016). · DOI
  49. Ochando, J. et al. Neanderthals in a highly diverse, Mediterranean-Eurosiberian forest ecotone: The Pleistocene pollen records of Teixoneres Cave, northeastern Spain. Quat. Sci. Rev. https://doi.org/10.1016/j.quascirev.2020.106429 (2020). · DOI
  50. Tissoux, H. et al. Datation par les séries de l’Uranium des occupations moustériennes de la grotte de Teixoneres (Moia, Province de Barcelone, Espagne). Quaternaire 17(1), 27–33 (2006). · DOI
  51. López-García, J. M. et al. A multidisciplinary approach to reconstructing the chronology and environment of southwestern European Neanderthals: The contribution of Teixoneres cave (Moià, Barcelona, Spain). Quat. Sci. Rev. 43, 33–44 (2012). · DOI
  52. Barron, E. & Pollard, D. High-resolution climate simulations of oxygen isotope stage 3 in Europe 1. Quat. Res. 58(3), 296–309 (2002). · DOI
  53. Getis, A. Temporalland-usepatternanalysiswiththeuseofnearestneighborandquadratmethods. Ann. Am. Assoc. Geogr. 54(3), 391–399 (1964). · DOI
  54. Ripley, B. D. The second-order analysis of stationary point processes. J. Appl. Probab. 13(2), 255–266 (1976). · DOI · Paper page
  55. De la Torre, I. et al. New excavations at the HWK EE site: Archaeology, paleoenvironment and site formation processes during late Oldowan times at Olduvai Gorge, Tanzania. J. Hum. Evol. 120, 140–202 (2018). · DOI
  56. Spagnolo, V. et al. Neanderthal activity and resting areas from stratigraphic unit 13 at the Middle Palaeolithic site of Oscurusciuto (Ginosa-Taranto, Southern Italy). Quat. Sci. Rev. 217, 169–193 (2019). · DOI
  57. Baddeley, A., Rubak, E. & Turner, R. Spatial Point Patterns: Methodology and Applications with R (CRC Press, Taylor & Francis Group, Boca Raton, 2015). · DOI
  58. Silverman, B. W. Density Estimation for Statistics and Data Analysis (Chapman and Hall, New York, 1986).
  59. Baxter, M. J., Beardah, C. C. & Wright, R. V. S. Some archaeological applications of Kernel density estimates. J. Archaeol. Sci. 24, 347–354 (1997). · DOI
  60. Oron, M. & Goren-Inbar, N. Mousterianintra-sitespatialpatterningatQuneitra, Golan Heights. Quat. Int. 331, 186–202 (2014). · DOI
  61. Villa, P. Conjoinable pieces and site formation processes. Am. Ant. 47(2), 276–290 (1982). · DOI
  62. Morin, E. et al. Bone refits in stratified deposits: Testing the chronological grain atSaint-Césaire. J. Archaeol. Sci. 32(7), 1083–1098 (2005). · DOI
  63. Lyman, R. L. Vertebrate Taphonomy (Cambridge University Press, Cambridge, 1994). · DOI
  64. Lyman, R. L. Quantitative Paleozoology (Cambridge University Press, New York, 2008). · DOI
  65. Fernández-Jalvo, Y. & Andrews, P. Atlas of Taphonomic Identifications: 1001+ Images of Fossil and Recent Mammal Bone Modification (Springer, New York, 2016). · DOI
  66. Stiner, M. C., Kuhn, S. L., Weiner, S. & Bar-Yosef, O. Differential burning, recrystallization, and fragmentation of archaeological bone. J. Archaeol. Sci. 22(2), 223–237 (1995). · DOI
  67. Blasco, R. & Peris, J. F. Middle Pleistocene bird consumption at Level XI of Bolomor Cave (Valencia, Spain). J. Archaeol. Sci. 36, 2213–2223 (2009). · DOI
  68. Noonan, M. J., Newman, C., Buesching, C. D. & Macdonald, D. W. Evolution and function of fossoriality in the carnivora: Implications for group-living. Front. Ecol. Evol. 3, 1–14 (2015). · DOI
  69. Sergant, J., Crombé, P. & Perdaen, Y. The ‘invisible’ hearths: A contribution to the discernment of Mesolithic non-structured surface hearths. J. Archaeol. Sci. 33(7), 999–1007 (2006). · DOI
  70. Alperson-Afil, N., Richter, D. & Goren-Inbar, N. Phantom hearths and the use of fire at Gesher Benot Ya’aqov, Israel. PaleoAnthropology 2007, 1–15 (2007).
  71. Alperson-Afil, N. Continual fire-making by hominins at Gesher Benot Ya aqov, Israel. Quat. Sci. Rev. 27(17), 1733–1739 (2008). · DOI
  72. Mentzer, S. M. Microarchaeological approaches to the identification and interpretation of combustion features in Prehistoric Archaeological Sites. J. Archaeol. Method. Theory 21(3), 616–668 (2014). · DOI
  73. Leierer, L. et al. Insights into the timing, intensity and natural setting of Neanderthal occupation from the geoarchaeological study of combustion structures: A micromorphological and biomarker investigation of El Salt, unit Xb, Alcoy, Spain. PLoS ONE 14(4), e0214955 (2019). · DOI
  74. Sánchez-Hernández, C. et al. Dietary traits of ungulates in northeastern Iberian Peninsula: Did these Neanderthal preys show adaptive behaviour to local habitats during the Middle Palaeolithic?. Quat. Int. https://doi.org/10.1016/j.quaint.2020.01.008 (2020). · DOI
  75. Böeda, E. & Pelegrin, J. Approche expérimentale des amas de Marsagny. Archéo. Expérim. 1, 19–36 (1985).
  76. Cziesla, E. On refitting of stone artifacts. In The Big Puzzle. International Symposium on Refitting Stone Artefacts Vol. 1 (eds Cziesla, E. et al.) 9–44 (Monrepos 1987, Studies in Modern Archaeology, Bonn, 1990).
  77. Newcomer, M. H. & Sieveking, G. D. G. Experimental flake scatter-patterns: A new interpretative technique. J Field Archaeol 7, 345–352 (1980). · DOI
  78. Vaquero, M. et al. Lithic refitting and intrasite artifact transport: A view from the Middle Paleolithic. Archaeol. Anthropol. Sci. 11(9), 4491–4513 (2019). · DOI
  79. Rosell, J. Patrons d’aprofitament de les biomases animals durant el Pleistoce Inferior i Mig (Sierra de Atapuerca, Burgos) i Superior (Abric Romani, Barcelona) (Ph.D. Dissertation, Universitat Rovira i Virgili, Tarragona, 2001).
  80. Bennett, J. L. Thermal alteration of buried bone. J. Archaeol. Sci. 26, 1–8 (1999). · DOI
  81. Torres, T. et al. Hominid exploitation of the environment and cave bear populations. The case of Ursus spelaeus Rosenmüller-Heinroth in Amutxate cave (Aralar, Navarra-Spain). J. Hum. Evol. 52, 1–15 (2007). · DOI
  82. Blasco, R., Rosell, J., Arsuaga, J. L., Bermúdez, J. M. & Carbonell, E. The hunted hunter: the capture of a lion (Panthera leo fossilis) at the Gran Dolina site (Sierra de Atapuerca, Burgos, Spain). J. Archaeol. Sci. 37, 2051–2060 (2010). · DOI
  83. Preysler, J. B., Nieto-Márquez, I. O., Navas, C. T. & Cueto, S. B. Recycling in abundance: Re-use and recycling processes in the Lower and Middle Paleolithic contexts of the central Iberian Peninsula. Quat. Int. 361, 142–154 (2015). · DOI
  84. Lemorini, C. et al. The function of recycled lithic items at late Lower Paleolithic Qesem Cave, Israel: an overview of the use-wear data. Quat. Int. 361, 103–112 (2015). · DOI
  85. Camarós, E. et al. Hunted or scavenged Neanderthals? Taphonomic approach to hominin fossils with carnivore damage. Int. J. Osteoarchaeol. 27, 606–620 (2017). · DOI
  86. Binford, L. R. Bones. Ancient Men and Modern Myths (Academic Press, New York, 1981).
  87. Binford, L. R. Dimensional analysis of behavior and site structure: Learning from an Eskimo hunting stand. Am. Ant. 43(3), 330–361 (1978). · DOI
  88. Binford, L. R. Willow smoke and dogs’ tails: Hunter-gatherer settlement systems and archaeological site formation. Am. Ant. 45(1), 4–20 (1980). · DOI · Paper page
  89. Patou-Mathis, M. Les grands mammifères de la grotte Cioarei (Borosteni, Roumanie): Repaire de carnivores et halte de chasse. Prèhistoire europèenne 16–17, 57–63 (2002).
  90. Patou-Mathis, M. InteractionsbetweenNeanderthalsandcarnivoresinEasternEurope. J. Taphon. 10(3–4), 277–290 (2012).
  91. Yravedra, J. Interacción de humanos y carnívoros en el Pleistoceno Superior de la Península Ibérica. Novedosas interpretaciones en la Cueva de Amalda. Espacio, Tiempo y Forma, Serie 1, Prehistoria y Arqueología 16–17, 79–98 (2004).
  92. Brugal, J. P. et al. The complex carnivore-rich assemblages from Furninha (Peniche, Portugal): A multidisciplinary approach. J. Taphon. 10(3–4), 417–438 (2012).
  93. Discamps, E., Delagnes, A., Lenoir, M. & Tournepiche, J.-F. Human and hyena cooccurrences in Pleistocenesites:Insightsfromspatial,faunalandlithicanalysesatCamiacandLaChauverie(SW France). J. Taphon. 10(3–4), 291–316 (2012).
  94. Enloe, J. G. Neanderthals, bears and hyenas, oh my! Competition for exclusive use of space. J. Taphon. 10(3–4), 185–195 (2012).
  95. Kitagawa, K., Krönneck, P., Conard, N. J. & Münzel, S. C. Exploring cave use and exploitation among cave bears, carnivores and hominins in the Swabian Jura, Germany. J. Taphon. 10(3–4), 439–461 (2012).
  96. Skinner, P. J. Relational Cohesion in Palaeolithic Europe: Hominin-Cave Bear Interactions in Moravia and Silesia, Czech Republic, During OIS3 (BAR Intern, Oxford, 2012).

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Authors
Zilio, L., Hammond, H., Karampaglidis, T., Sánchez-Romero, L., Blasco, R., Rivals, F., Rufà, A., Picin, A., Chacón, M. G., Demuro, M., Arnold, L. J., & Rosell, J.
Venue
Scientific Reports
Publisher
Springer Science and Business Media LLC
Published
2021-02-22
Volume
11
Issue
1
ISSN
2045-2322
DOI
10.1038/s41598-021-83741-9
PMC
PMC7900232
Cited by
44
References
0
Language
en
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