Another notable change is the burgeoning of artistic credit in sculpture. The entirety of information known about sculpture in the Archaic and Geometrical periods are centered upon the works themselves, and seldom, if ever, on the sculptors. Examples include Phidias, known to have overseen the design and building of the Parthenon, and Praxiteles, whose nude female sculptures were the first to be considered artistically respectable. Praxiteles' Aphrodite of Knidos, which survives in copies, was often referenced to and praised by Pliny the Elder.