Otto Schoetensack (German: [ˈʃoːtənzak]; July 12, 1850 in Stendal – December 23, 1912 in Ospidaletto) was a German industrialist and later professor of anthropology, born of financial means. During an archeological dig, he oversaw the worker Daniel Hartmann who found the lower jaw of a hominid, the oldest human fossil then known, which Schoetensack later described formally as Homo heidelbergensis.
"Der Unterkiefer des Homo heidelbergensis aus den Sanden von Mauer bei Heidelberg" (The lower jaw of the Homo heidelbergensis out of the sands of Mauer near Heidelberg). 1908. Leipzig: Wilhelm Engelmann.