Abstract
The collection of parasitological information from ancient material requires an exhaustive study of samples. In 2005, cestode and nematode eggs were found in a coprolite sample tentatively assigned to a canid. The sample was obtained from the layer of the archaeological site located in Cerro Casa de Piedra, Santa Cruz Province, Argentina, and dated from 6540±110 years before present. The aim of the present work was to reexamine this fixed sample in order to confirm the presence of these parasites. The palaeoparasitological results support our previous findings. Interestingly, another parasite was also confirmed: a dioctophymatid nematode. Dioctophyma renale has been reported in several modern carnivores in the Southern Hemisphere but in ancient materials, it has only been reported in human coprolites from Switzerland. This report constitutes the first evidence of the presence of a dioctophymatid nematode parasite dioctophymatid nematode in American pre-Columbian times. The results obtained in this work show the importance of revising earlier palaeoparasitological results.
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