Back in the '60s and '70s the Australian animation industry pretty much existed as a place where American studios can have tons of footage produced under low budget. King Features and Hanna-Barbera in particular took advantage of this.
Eventually though, the folks down in the southern hemisphere decided to create their own cartoons for their television. The first of those was Arthur and the Square Knights of the Round Table, produced by a company called Air Programs International (API) and broadcast starting 1968.
The show was syndicated throughout the world, including the United States where it was distributed under 20th Century Fox. Unfortunately it was unsuccessful in US. This may be the result of the show's style and humor being very similar to that of the Jay Ward cartoons produced in the 'States. It's a shame because it's actually quite enjoyable. The animation, while crude, is very bouncy and fun, and the dry humor appeals to me. I also love the "comic strip"-like character designs. The show was directed by Zoran Janjic, who originated from Zagreb, which partially explains the style.
Here are some videos: