The upper limb skeleton and behavioral lateralization of modern humans from Zhaoguo Cave, southwestern China
Dados Bibliográficos
| AUTOR(ES) | |
|---|---|
| AFILIAÇÃO(ÕES) | Guizhou Municipal Institute of Cultural Relics and Archaeology Guiyang China, Department of Archaeology Sichuan University Chengdu China, National Demonstration Center for Experimental Archaeology Education Sichuan University Chengdu China, Ministry of Education Key Laboratory of Contemporary Anthropology, Department of Anthropology and Human Genetics School of Life Sciences, Fudan University Shanghai China, Key Laboratory of Vertebrate Evolution and Human Origins Institute of Vertebrate Palaeontology and Palaeoanthropology, Chinese Academy of Sciences Beijing 100044 China, Chengdu Municipal Institute of Cultural Relics and Archaeology Chengdu China, Department of Integrative Anatomical Sciences Keck School of Medicine, University of Southern California Los Angeles California 90033 USA |
| ANO | 2020 |
| TIPO | Artigo |
| PERIÓDICO | American Journal of Physical Anthropology |
| ISSN | 0002-9483 |
| E-ISSN | 1096-8644 |
| EDITORA | Berghahn Journals (United Kingdom) |
| DOI | 10.1002/ajpa.24147 |
| CITAÇÕES | 3 |
| ADICIONADO EM | 2025-08-18 |
Resumo
ObjectivesAims of the study are to initially describe and comparatively evaluate the morphology of the new Zhaoguo M1 upper limb remains, and contextualize upper limb functional adaptations among those of other worldwide Upper Paleolithic (UP) humans to make inferences about subsistence‐related activity patterns in southwestern China at the Pleistocene–Holocene boundary.Materials and methodsThe preserved Zhaoguo M1 skeletal remains include paired humeri, ulnae, and radii, among others. These specimens were scanned using micro‐computed tomography to evaluate internal structural properties, while external osteometric dimensions of the Zhaoguo M1 upper limb elements also were acquired. Both sets of measurements were compared to published data on Neandertals, and Middle and Upper Paleolithic modern humans.ResultsThe upper limb elements of Zhaoguo M1 display a suite of characteristics that generally resemble those of other contemporary Late UP (LUP) modern humans, while robusticity indices generally fall within the upper range of LUP variation. The Zhaoguo M1 upper limb elements display fewer traits resembling those of late archaic humans. The Zhaoguo M1 individual exhibits diaphyseal asymmetry in several upper limb elements suggesting left hand dominance. When evaluating the full range of magnitudes of humeral bilateral asymmetry in the comparative sample, Zhaoguo M1 falls at the lower end overall, but yet is relatively higher than contemporary LUP modern humans specifically from East Eurasia.DiscussionThe Zhaoguo M1 individual suggests typical LUP modern human upper limb morphology persisted in southwest China until the end of the last glacial period. Upper limb bone asymmetry of Zhaoguo M1 also indicates that behavioral activities attributed to a hunter‐gatherer tradition apparently extended through the Pleistocene–Holocene transition in this region.