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Earliest record of the spinose ear tick, Otobius megnini (Dugès) (Ixodida: Argasidae), from the Paisley Caves site (Oregon, USA), with implications for prehistoric human ectoparasitism - ScienceDirect
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Proboscideans on Parade: A review of the migratory behaviour of elephants, mammoths, and mastodons - ScienceDirect
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