sacrum 7 Humans 6 human 6 Animals 4 Archaeological sediment technique 4 Archaeological sediments 4 Archaeology 4 Argentina 4 Coccyx 4 Geologic Sediments 4 Paleoparasitology 4 Paleopathology 4 Parasite remains 4 Pelvic Bones 4 Sacrum 4 Southern Patagonia 4 Trichuris 4 Trichuris eggs 4 Trichuris trichiura 4 animal 4 archeology 4 coccygeal bone 4 conference paper 4 isolation and purification 4 methodology 4 paleopathology 4 parasitology 4 pelvic girdle 4 sediment 4 Adolescent 2