"Petrified Smurfs" is the only episode with only four Smurfs represented (Papa Smurf, Brainy, Clumsy, and Hefty) in the cartoon series.
"Petrified Smurfs" marks the first appearance of the ghost of Uncle Fenwick Quarrel, who also appears in "Smurfing for Ghosts".
"Petrified Smurfs" marks the first time Peewit appears without Johan. This does not count as a Johan And Peewit episode because of this.
"Petrified Smurfs" is one of four episodes in which Peewit appears without Johan. The others being "Smurfing for Ghosts", "Baby's First Word", and "The Littlest Viking".