 Schaaffhausen published a paper on the Neanderthal fossils in the "Archiv für Anatomie, Physiologie und wissenschaftliche Medicin" in 1858 and Fuhlrott published a paper in the "Verhandlungen des Naturhistorischen Vereins der preussischen Rheinlande und Westphalens" in 1859 describing the geology of the site and how the bones were discovered.Fuhlrott and Schaaffhausen believed the Neanderthal fossils dated from the Glacial Period when extinct animals such as mammoths and the woolly rhinoceros still lived in Europe, which would make them among the oldest human remains known.This was before scientists believed humans lived during the Ice Age.