Examinando por Autor "Baquedano, Enrique"

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    Current Issues in Late Middle Palaeolithic Chronology: the Curious Case of Northern Iberia.
    (2012-01-16) Maroto, Julià; Vaquero, Manuel; Arrizabalaga, Álvaro; Baena Preysler, Javier; Baquedano, Enrique; Julià, Ramón; Montes, Ramón; Van del Plicht, J.; Rasines, Pedro; Wood, Rachel; Jordá Pardo, Jesús Francisco
    The Iberian Peninsula plays a central role in the current debates on the Middle-Upper Palaeolithic transition and the Neanderthal extinction. This is largely due to the chronological data which some authors have suggested show a clear divide between Northern Iberia, where the Upper Palaeolithic appeared as early as 36.5 ka 14C BP, and Southern Iberia, where the Middle Palaeolithic survived until ca. 32-30 ka 14C BP or later. The best example of this view is the Ebro Frontier hypothesis. However, there are chronological data in both Northern and Southern Iberia that do not fit this pattern, and some of the evidence supporting the Ebro Frontier hypothesis has been questioned in recent years. This paper focuses on the chronology of the final Middle Palaeolithic of Northern Iberia, where several assemblages have been found to post-date the first Upper Palaeolithic in the region, and be of a similar age to the final Neanderthal occupations of the south. In order to improve the chronological framework of the Middle-Upper Palaeolithic boundary in the Northern Iberian Peninsula, we are carrying out a radiocarbon dating program focused on sites from both the Cantabrian and Mediterranean regions. The first results of this program are presented in this paper. New radiocarbon dates have been measured by two laboratories using a range of pre-treatment methodologies. These do not support a late Middle Palaeolithic in Northern Iberia.
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    The Dorothy Garrod Site: a new Middle Stone Age locality in Olduvai Gorge, Tanzania
    (Springer Nature, 2022-08-18) Maíllo Fernández, José Manuel; Marín Hernando, Juan; Martín Perea, David Manuel; Uribelarrea, David; Solano Megías, Irene; Asiaín, Raquel; Baquedano, Enrique; Domínguez Rodrigo, Manuel; Gidna, Agness; Medialdea, Alicia; Steven, Hekima Mwamakimbula; Chilonzi, Daniel Haruni; Arteaga, Carlos; Mabulla, Audax; https://orcid.org/0000-0002-3238-0904; https://orcid.org/0000-0002-1681-264X; https://orcid.org/0000-0002-8374-2215; https://orcid.org/0000-0001-5895-0736; https://orcid.org/0000-0001-9591-5497
    Olduvai Gorge (Tanzania) is a key site for the study of human evolution as well as the origin of modern humans and the Middle Stone Age (MSA). In this study, we present a new MSA location named Dorothy Garrod Site (DGS), found in the main branch of Olduvai Gorge. The site has only one archaeological level, located stratigraphically in the Upper Ndutu. Although it has not yet been possible to radiometrically date it, it has yielded numerous archaeological remains with a functional association between the faunal remains and the lithic industry. The fauna identified includes Alcelaphini, Hippotragini, and Equidae, some of which present percussion marks and evidence of burning. The lithic industry involved knapping using discoid methods. The retouched blanks are denticulates and retouched flakes with, up to now, a total absence of points. DGS is therefore a new site that will aid our understanding of modern human occupations in northern Tanzania in a period for which there is a dearth of properly contextualised archaeological evidence.
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    Equids can also make stone artefacts
    (Elsevier, 2021-12-01) Domínguez Solera, Santiago David; Maíllo Fernández, José Manuel; Baquedano, Enrique; Domínguez Rodrigo, Manuel; https://orcid.org/0000-0002-6079-9390
    Identifying how early humans flaked stone tools is one of the crucial elements in hominin evolution. Here, we show that equids can sometimes also produce equally complex cores with conchoidal breakages that exhibit the characteristics of intentionally-flaked hominin artefacts by bipolar technique and methods. As a result, sharp edged flakes with percussion platforms, previous scars and bulbs, which can easily be mistaken with hominin-made flakes, are also produced by equid self-trimming. Given the ubiquitous presence of equids in landscapes inhabited by hominins, this imposes caution when interpreting isolated flaked rocks and urges some degree of revision of the criteria to identify strictly hominin-made tools.