A 33,000-year-old incipient dog from the Altai Mountains of Siberia: evidence of the earliest domestication disrupted by the Last Glacial Maximum. (33/88)

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Environmental changes in the western Amazonia: morphological framework, geochemistry, palynology and radiocarbon dating data. (34/88)

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Australopithecus sediba at 1.977 Ma and implications for the origins of the genus Homo. (35/88)

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Radiocarbon-dated archaeological record of early first millennium B.C. mounted pastoralists in the Kunlun Mountains, China. (36/88)

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Paleoamerican diet, migration and morphology in Brazil: archaeological complexity of the earliest Americans. (37/88)

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Earliest known use of marine resources by Neanderthals. (38/88)

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Difference in radiocarbon ages of carbonized material from the inner and outer surfaces of pottery from a wetland archaeological site. (39/88)

AMS (Accelerator Mass Spectrometry) radiocarbon dates for eight potsherds from a single piece of pottery from a wetland archaeological site indicated that charred material from the inner pottery surfaces (5052 +/- 12 BP; N = 5) is about 90 (14)C years older than that from the outer surfaces (4961 +/- 22 BP; N = 7). We considered three possible causes of this difference: the old wood effect, reservoir effects, and diagenesis. We concluded that differences in the radiocarbon ages between materials from the inner and outer surfaces of the same pot were caused either by the freshwater reservoir effect or by diagenesis. Moreover, we found that the radiocarbon ages of carbonized material on outer surfaces (soot) of pottery from other wetland archaeological sites were the same as the ages of material on inner surfaces (charred food) of the same pot within error, suggesting absence of freshwater reservoir effect or diagenesis.  (+info)

Pre-Clovis mastodon hunting 13,800 years ago at the Manis site, Washington. (40/88)

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