This early 16th-century drawing of Phyllis Riding Aristotle by Master M.Z. (ca. 1500) depicts a clothed Phyllis riding Aristotle in a walled garden while Alexander (?) watches (original at the Art Institute of Chicago).
Casket with scenes of romances. Front side including, from left: Aristotle teaching Alexander the Great, Phyllis riding Aristotle, watched by Alexander from a window, and at the right, old people arriving at the Fountain of Youth, and young naked people in it. Walters Art Museum. Public Domain.