After reviving a fossilized dinosaur egg using Doraemon’s time cloth, Nobita must return the now-full-grown plesiosaur back to its own time. Nobuyo Oyama, Yoshino Otori, Kazuya Tatekabe, Kaneta Kimotsuki, Yoshito Miyamura, Sachiko Chijimatsu, Ushio Shima, Masayuki Kato, Michiko Nomura, Kazuyo Aoki, Kazuhiko Inoue, Noriko Ohara, Keiko Yokozawa, Seizo Kato, Gekidan Hitori, Yumi Kakazu, Ryunosuke Kamiki, Subaru Kimura Added on Netflix 2023-03-04.