Micromammals taphonomy and palaeoenvironmental reconstruction of a late Pleistocene site: a case study at Roc-en-Pail (France)
International audience In the mid-20th century, human and faunal remains were recovered associated to a mousterian lithic industry in a 5 meters thick sedimentary sequence in Roc-en-Pail (Maine-et-Loire). Recent excavations yielded numerous microvertebrate remains in 3 stratigraphical units. To dete...
Published in: | Quaternaire |
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Main Authors: | , |
Other Authors: | , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | French |
Published: |
HAL CCSD
2018
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Subjects: | |
Online Access: | https://shs.hal.science/halshs-02123782 https://doi.org/10.4000/quaternaire.8638 |
Summary: | International audience In the mid-20th century, human and faunal remains were recovered associated to a mousterian lithic industry in a 5 meters thick sedimentary sequence in Roc-en-Pail (Maine-et-Loire). Recent excavations yielded numerous microvertebrate remains in 3 stratigraphical units. To determine a possible predator bias, a taphonomic analysis was done on digestion marks and the relative abundance of micromammal skeletal elements. It highlights a nocturnal raptor of medium size and little destructive as a main accumulating agent, probably Bubo scandiacus or Asio otus.These types of predators have a diversified diet but they usually choose to hunt in an open space and to concentrate on the most frequent species. Therefore an over-representation of the most abundant species is possible on the site. The majority of the species identified, such as Dicrostonyx torquatus, Microtus gregalis, Ochotona pusilla, Lagopus sp., Microtus oeconomus and Cricetulus migratorius indicates an open landscape under a cold and dry climate. The vicinity of the river Loire could have contributed to maintain the riparian vegetation in the landscape, which is supported by the presence of Arvicola amphibius. Au milieu du xxe siècle, des restes humains et fauniques ont été retrouvés associés à une industrie moustérienne au sein d’une séquence stratigraphique de 5 mètres sur le site de Roc-en-Pail (Maine-et-Loire). Des excavations récentes ont mis au jour de nombreux restes de microvertébrés au sein de 3 Unités Stratigraphiques. Pour déterminer un possible biais lié au prédateur, une analyse taphonomique sur l’altération due à la digestion et l’abondance relative d’éléments squelettiques a été réalisée. Elle met en lumière un rapace nocturne de taille moyenne et peu destructeur comme agent accumulateur principal, probablement Bubo scandiacus ou Asio otus. Ces prédateurs ont un régime éclectique mais vont préférentiellement chasser en milieu ouvert et se concentrer sur les espèces les plus fréquentes. Ainsi une surreprésentation ... |
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