Question: Who was younger, Arthur Rankin Jr. or Jules Bass?

Context paragraphs:
The Flight of Dragons: The Flight of Dragons is a 1982 animated fantasy film produced by Jules Bass and Arthur Rankin, Jr. and loosely combining the speculative natural history book of the same name (1979) by Peter Dickinson with the novel "The Dragon and the George" (1976) by Gordon R. Dickson.  The film centers upon a quest undertaken to stop an evil wizard who plans to rule the world by dark magic.  A major theme within the story is the question of whether science and magic can co-exist.  This is told mostly through the experience of character Peter Dickinson, drawn from the 20th century into the magical realm.

The Bermuda Depths: The Bermuda Depths is a Japanese / American co-production 1978 fantasy film originally broadcast as a made-for-TV movie written by Arthur Rankin Jr. of Rankin/Bass fame.  Special effects and creature elements were handled by Tsuburaya Productions, most famous for the "Ultraman" franchise.  The movie first aired in the United States January 27, 1978 on ABC, and was later released to theaters in Japan.

Jack Frost (1979 film): Jack Frost is a 1979 Christmas stop motion animated television special produced by Rankin/Bass Productions.  It was directed by Jules Bass and Arthur Rankin, Jr., written by Romeo Muller and premiered on the NBC network on December 13, 1979.  The special tells the tale of Jack Frost, the winter sprite, and his adventures as a human.

The Daydreamer (film): The Daydreamer is a 1966 stop motion animated and live-action musical fantasy film produced by Rankin/Bass Productions.  Directed by Jules Bass, it was written by Arthur Rankin, Jr. and Romeo Muller, based on the stories of Hans Christian Andersen.  It features songs by Jules Bass and Maury Laws.  The film's opening features the cast in puppet and live form plus caricatures of the cast by Al Hirschfeld.

The Wind in the Willows (1987 film): The Wind in the Willows is a 1987 American animated musical television film directed by Arthur Rankin, Jr. and Jules Bass.  It is an adaptation of "The Wind in the Willows" by Kenneth Grahame.  Set in a pastoral version of England, the film focuses on four anthropomorphised animal characters (Moley, Ratty, Mr. Toad, and Mr. Badger) and contains themes of mysticism, adventure, morality, and camaraderie.  The film features the voices of Charles Nelson Reilly, Roddy McDowall, José Ferrer, and Eddie Bracken.  The screenplay was written by Romeo Muller, a long-time Rankin/Bass writer whose work included "Rudolph the Red-Nosed Reindeer", "The Hobbit", and "The Flight of Dragons", among others.

The New Adventures of Pinocchio (TV series): The New Adventures of Pinocchio is a syndicated stop motion animated television series produced by Rankin/Bass Productions in the United States and made by Dentsu Studios in Japan.  Created by Arthur Rankin, Jr. and his partner Jules Bass, it was based on the book "The Adventures of Pinocchio" written by Italian author, Carlo Collodi.  The series was Rankin/Bass' first production to be made in "Animagic", a stop motion puppet technique which, in association with the company, was done by Tadahito Mochinaga's MOM Productions (before Mochinaga leaves for China after the finished animation for "Mad Monster Party? ").  A total of 130 five-minute "chapters" were produced in 1960–61.  These segments made up a series of five-chapter, 25-minute episodes.  During 1963–64, the series was also aired in Japan on Fuji TV as part of another stop motion TV series, "Prince Ciscorn" (シスコン王子, lit.  "Ciscorn Ōji"), based on the manga by Fujiko Fujio and also produced by Tadahito Mochinaga for Studio KAI and Dentsu.

The Stingiest Man in Town: The Stingiest Man in Town (町一番のけちんぼう , Machi Ichiban no Kechinbō ) (1978), based on Charles Dickens's "A Christmas Carol", is a Christmas special created by Arthur Rankin Jr. and Jules Bass, which featured traditional animation rather than the Animagic most often used by the company.  It was an animated remake of a long-unseen, but quite well received, live-action musical special (also called "The Stingiest Man in Town") which had starred Basil Rathbone, Martyn Green, and Vic Damone.  The live-action version had been telecast on December 23, 1956, on the NBC anthology series "The Alcoa Hour", and was published on DVD in 2011, by VAI.  The animated remake first aired December 23, 1978, in the United States on ABC, and was telecast in Japan the next day.

Jules Bass: Jules Bass (born September 16, 1935) is an American director, producer, composer, lyricist, and author.  Until 1960, he worked at a New York advertising agency, and then co-founded a film production company in New York.  He joined ASCAP in 1963 and collaborated musically with Edward Thomas and James Polack.

Arthur Rankin Jr.: Arthur Gardner Rankin Jr. (July 19, 1924 – January 30, 2014) was an American director, producer and writer, who mostly worked in animation.  A part of Rankin/Bass Productions with his friend Jules Bass, he created stop-motion animation features such as "Rudolph the Red Nosed Reindeer" and the 1977 cartoon animation of "The Hobbit".  He is credited on over 1,000 television programs.

The Last Unicorn (film): The Last Unicorn is a 1982 animated fantasy film directed and produced by Arthur Rankin Jr. and Jules Bass.  It was produced by Rankin/Bass Productions for ITC Entertainment and animated by Topcraft.  Based on the novel "The Last Unicorn" written by Peter S. Beagle, who also wrote the film's screenplay, the film is about a unicorn who, upon learning that she is the last of her species in the world, goes on a quest to find out what has happened to the others of her kind.

Supporting paragraphs: Arthur Rankin Jr. Jules Bass
Answer: Jules Bass