A collection of fish remains recovered from the Upper Palaeolithic site of Les Pedroses in the Spanish province of Asturias have been examined to determine the nature of accumulation. Research...Show moreA collection of fish remains recovered from the Upper Palaeolithic site of Les Pedroses in the Spanish province of Asturias have been examined to determine the nature of accumulation. Research focused on the anatomy, taxonomy, taphonomy and osteometry of the remains. The site is located along a tributary of the Sela river valley Asturias in the municipality of Ribadesella. Previous excavations have uncovered evidence of human occupation ranging from the Solutrean to the Early Holocene. The fish remains were recovered from four stratigraphical layers found at the back of the vestibule along the northern wall of the cave. The oldest layer has been radiocarbon dated to 12.250±40 BP or 14.328-14.004 Cal BP, which puts it well within the Late Upper Magdalenian. It is followed by a transitionary layer, an Early Holocene layer and a superimposed layer. Taxonomic identification of the remains was conducted with the help of fish bone reference collections housed at the Laboratory for Archaeozoological Studies of Leiden and the Laboratory for Zooarchaeological Research at the University of Amsterdam. A family, genus or species level identification could be obtained for the majority of fish remains found in the assemblage. A mix of marine and freshwater fishes were identified with Clupeids and Salmonids being best represented taxa in all four stratigraphical layers. Vertebrae were by far the best represented skeletal elements. Over half of the skeletal elements in all four stratigraphical layer could be identified as vertebrae. All skeletal elements were measured according to the guidelines established in Watt et al. (1997) for vertebrae and Morales & Rosenlund (1979), when applicable. Total length and weight of the fishes was estimated through the use of global rachidean profiles. Clupeid and salmonids vertebrae, the most common taxa and skeletal elements, were compared to two reference specimens taken from the Laboratory for Archaeozoological Studies of Leiden. We estimate the clupeids had fork length of less than 24 cm and the salmonids had a total length of around 29.5 cm and weighted roughly 200 grammes. The total length and weight of all other taxa falls somewhere in-between, likely on the side of the Clupeids. The presence of bone surface modifications such as compression or digestion and degree of fragmentation was documented for each skeletal element in the assemblage. Over 90% of the remains were fragmented with 10 to 20% of vertebrae showing signs of compression or digestion. The absence of chopmarks, cutmarks or burning marks and the overall small size ranges of the fishes discounts an anthropogenic origin of accumulation. The osteometrical, taphonomical, taxonomical and anatomical aspects of the assemblage best fit the characteristics of fish bones deposited by otters (Lutra lutra L.). The seasonality inferred from the fishes suggests human occupied Les Pedroses during the late summer and autumn months. This research has illustrated the archaeological value in fish remains, which are typically understudied in the region.Show less
Research master thesis | Archaeology (research) (MA/MSc)
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This thesis discusses the environmental changes in flora and fauna from the Middle Pleistocene site Schöningen 13 II, Germany. The data in this thesis consists of the ecological data from Schö 13...Show moreThis thesis discusses the environmental changes in flora and fauna from the Middle Pleistocene site Schöningen 13 II, Germany. The data in this thesis consists of the ecological data from Schö 13 II as well as faunal data from Middle Pleistocene archaeological sites and data from present day national parks in Europe. This data is used to get insight in species compositions in various types of environments. The archaeological data, comprising flora and fauna, are analysed as an entity to gain insight into the structure of the environmental changes at this site. The environment in Schöningen changed gradually in the four levels, Schö 13 II-1 to 13 II-4 from interglacial optimum to stadial phase with an onset to a glacial phase. The floral data gave detailed indications of fluctuations in the environment, whereas the faunal data showed a more gradual change in the environment. The elements in Schö 13 II-1 are indicative for an interglacial phase, 13 II-2 contains elements of both interglacial and (inter)stadial phases and levels 13 II-3 and 13 II-4 are indicative for stadial contexts. Characteristic for the patterns in species diversity is that it is variable throughout the levels. Schö 13 II-1 and 13 II-3 both show a relatively low diversity, whereas the diversity in 13 II-2 and 13 II-4 is higher, but still not exceptionally high if compared to other Middle Pleistocene sites. These differences in diversity can be explained by potential deformations by taphonomical processes. The non-analoguous patterns in large mammal compositions of the site can be explained in terms of species behaviour and taphonomical processes.Show less