Septima etas mundi. Imago Mortis

The famous picture from the Nuremberg Chronicle by Hartmann Schedel, 1493, engraved by Michael Wolgemut. This is not a dance of death, but represents The Seventh Age of the World. The next "age" is Judgment Day.

See the 15 signs before Judgment Day for details. There's a larger version here: Schedel.