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- New methods on the block: taxonomic identification of archaeological bones in resin-embedded sediments through paleoproteomicsPublication . Fagernäs, Zandra; Troché, Gaudry; Goldberg, Paul; Goldberg, Paul; Hublin, Jean-Jacques; McPherron, Shannon P; Murphree, William; Olsen, Jesper V; Sandgathe, Dennis; Sirakov, Nikolay; Soressi, Marie; Tsanova, Tsenka; Turq, Alain; Wierer, Michael; Welker, Frido; Aldeias, Vera; James O'ConnellThe integration of biomolecular studies of past organisms with geoarchaeological studies can significantly improve our understanding of the relative chronology and context of archaeologically (in)visible behaviors. However, the complexity and sedimentological heterogeneity of archaeological deposits at a microscopic scale is often not taken into consideration in biomolecular studies. Here, we investigate the preservation and retrieval of paleoproteomic data from bone fragments embedded in Pleistocene resin-impregnated sediment blocks. We show that resin impregnation has minimal effect on skeletal protein taxonomic identifications in modern skeletal material but observe an increase in oxidation of methionines. We then successfully retrieve proteins from resin-impregnated blocks from the Paleolithic sites of Bacho Kiro Cave, La Ferrassie, and Quinçay. The taxonomic identifications of minute bones encased in resin are in line with previous analyses of the faunal communities of these sites, with a diversity of taxa (Bos sp./Bison sp., Equus sp., Ursus sp., and Caprinae) observed at a microscale in Bacho Kiro. This differs from results from La Ferrassie where most of the samples are identified as a single taxon (Bos sp./Bison sp.) across different areas of the site. The block from Quinçay only provided taxonomic identification of two out of eleven bone-derived samples, likely due to diagenesis. Our work indicates that paleoproteomes can be retrieved from bone fragments at a microstratigraphic resolution, enabling the detailed study of faunal community composition at a scale that more closely matches that of past human occupations.
- Evidências do português médio no corpus de textos antigosPublication . Bico, Maria Inês; Cardeira, Esperança; Baptista, Jorge; Batista, FernandoA partir de um conjunto de dados semi-automaticamente anotados do Corpus de Textos Antigos (CTA), este artigo propõe-se a analisar os resultados obtidos sobre a síncope de -d- intervocálico no morfema da 2.ª pessoa plural, e a consequente resolução do hiato, e as terminações de Particípio Passado -udo/-ido nos verbos com origem etimológica nas 2.ª e 3.ª conjugações latinas. A novidade deste artigo está no recurso a métodos de Processamento de Linguagem Natural (PLN) para a otimização da obtenção e extração sistemática dos dados relevantes para análise, contribuindo para um estudo que engloba um maior conjunto de textos. É apresentada a metodologia adotada para a anotação dos dados, e consequente extração dos dados relevantes à análise, afirmando-se a importância do recurso a métodos e ferramentas de PLN para o estudo linguístico e para a descrição dos estados anteriores da língua portuguesa.
- Châtelperronian cultural diversity at its western limits: shell beads and pigments from La Roche-à-Pierrot, Saint-Césaire.Publication . Bachellerie, François; Gravina, Brad; Rigaud, Solange; Dayet, Laure; Thomas, Marc; Lebreton, Loïc; Morin, Eugène; Lesage, Camille; Falguères, Christophe; Bard, Edouard; Bahain, Jean-Jacques; Baillet, Mickaël; Beauval, Cédric; Bordes, Jean-Guillaume; Culioli, Gérald; Devièse, Thibaut; Flas, Damien; Garbé, Lisa; Guérin, Guillaume; Lacrampe-Cuyaubère, François; Lahaye, Christelle; Mallol, Carolina; Marot, Josserand; Maureille, Bruno; Michel, Alexandre; Muth, Xavier; Regniers, Olivier; Tartar, Elise; Teyssandier, Nicolas; Thibeault, Adrien; Todisco, Dominique; Tombret, Olivier; Rougier, Hélène; Crevecoeur, IsabelleThe timing and mechanisms underlying the gradual replacement of Neanderthal populations by groups have elicited heated debate for decades. The Châtelperronian of France and northern Spain has figured prominently in these discussions. While the Neanderthal authorship of this techno-complex is far less certain than previously thought, the Châtelperronian is now generally accepted as being among the first genuine Upper Paleolithic industries in Eurasia rather than a "transitional" stone tool technology. Here, we report the first association of shell beads with Châtelperronian artifacts from new excavations at the site of La-Roche-à-Pierrot, Saint-Césaire (France), supported by a multiproxy spatial analysis that incorporates site formation processes. Similar types of personal ornaments are unknown from Middle Paleolithic contexts. Comparable examples have, however, been recovered from contexts penecontemporaneous with the Châtelperronian in south-eastern Europe and around the Mediterranean. This hitherto undocumented combination of an early Upper Paleolithic industry and shell beads provides insights into cultural variability in western Europe and raises the question as to whether the makers of the Châtelperronian were influenced by or formed part of the earliest dispersals of into the region.