 Benecke at the Geologisch-Paläontologisches Institut in Straßburg, where he received his Habilitation.He worked at the Friedrich-Wilhelms-Universität Berlin and at the Geologisch-Paläontologisches Museum (a combined post) from 1894.Jaekel was considered as an ordinary professor of geology at the University of Vienna in 1903, but this was blocked by intrigue.