. "Egyptian protodynastic period" . "predynastic Egyptian" . . "predynastic" . . "Dynasty 0" . . "Protodynastic period" . "Egyptian Protodynastic Period" . . . . "Protodynastic Period of Egypt" . . . "Protodynastic Period" . . "Protodynastic" . . . . "protodynastic" . . . . "Naqada III" . . . "Naqada III" . "Naqada IIIB" . "one or several Upper Egyptian Dynasties" . "Naqada III" .