The first remains known to science were a fragmentary skull from a chalk quarry in the St Pietersberg, a hill near Maastricht, the Netherlands, found in 1764 and collected by lieutenant Jean Baptiste Drouin in 1766.
Os primeiros restos coñecidos pola ciencia foron un cranio fragmentario proveniente dunha canteira de calcarias no Monte San Pedro, un outeiro preto de Maastricht, Países Baixos, achado en 1764 e recollido polo tenente Jean Baptiste Drouin en 1766.