Homo heidelbergensis – also Homo rhodesiensis – is an extinct species of the genus Homo that lived in Africa, Europe and western Asia between 600,000 and 200,000 years ago. The skulls of this species share features with both Homo erectus and anatomically modern Homo sapiens; its brain was nearly as large as that of Homo sapiens. Although the first discovery – a mandible – was made in 1907 near Heidelberg in Germany where it was described and named by Otto Schoetensack, "the great majority of fossils attributed to Homo heidelbergensis have [only] been obtained recently, beginning in 1997." The Sima de los Huesos cave at Atapuerca in northern Spain holds particularly rich layers of deposits that "represent an exceptional reserve of data" where excavations are still in progress.