airdate, resulting in the airdates of the two subsequent episodes being one week off. Notes and references External links : All about the 1975–76 Animated series on NBC, including extensive episode summaries from Epi-Log magazine. : Including Return to the Planet of the Apes. Planet of the Apes American children's animated science fantasy television series American children's animated space adventure television series 1970s American animated television series 1975 American television series debuts 1976 American television series endings Television series by DePatie–Freleng Enterprises Television series by 20th Century Fox Television NBC original programming Animated television shows based on films Post-apocalyptic animated television series Television series based on adaptations Television shows based on French novels Television series set in the future Television series set in the 4th millennium