The causes of the late Pleistocene megafaunal extinctions are still enigmatic. Although the fossil record can provide approximations for when a species went extinct, the timing of its disappearance alone cannot resolve the causes and mode of the decline preceding its extinction. However, ancient DNA analyses can reveal population size changes over time and narrow down potential causes of extinction. Here, we present an ancient DNA study comparing late Pleistocene population dynamics of two closely related species, cave and brown bears. We found that the decline of cave bears started approximately 25,000 years before their extinction, whereas brown bear population size remained constant. We conclude that neither the effects of climate change nor human hunting alone can be responsible for the decline of the cave bear and suggest that a complex of factors including human competition for cave sites lead to the cave bear's extinction.

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The site of Hunas is a cave ruin, filled with bedded sediments up to the roof. About 20 m sediments from the top down were excavated and yielded Middle Paleolithic artifacts as well as numerous faunal remains, including Macaca. With a single human molar, the site is one of the rare Neanderthalian localities in Germany. New TIMS-U/Th dating of speleothems at the base of the profile indicate that the whole sequence was not deposited during the late Middle Pleistocene as previously thought, but during the last glacial. According to the new chronological results, Hunas is the only place which shows the coexistence of man and monkey in the Würmian of Central Europe. The Macaca remains are the most recent evidence of magots in Central Europe so far.