Ars Brevis Foundation, Inc.
The figures in the lunettes and window spandrels of the Sistine Chapel were literally obscured for about 500 years. Now that the frescoes are visible once again, scholars will turn to the ancestor cycle with renewed interest.
Pappas, Andrea. "Observations on the Ancestor Cycle of the Sistine Chapel Ceiling." Source: Notes in the History of Art 11, No. 2 (Winter 1992), pp. 27-31.