What were the emblems or banners of the twelve tribes of Israel?

The emblems appearing on the tribal banners were: Reuben-Mandrakes, Simeon-Fortress, Levi-Shield of Judgement, Judah-Lion, Issachar-Sun and Moon, Zebulun-Ship, Dan-Snake, Naphtali-Deer, Gad-Tent, Asher-Olive Tree, Joseph-Ox, Benjamin-Wolf.