Do you mean the first Super Mario World, or Super Mario World 2: Yoshi's Island? (Man, that name is unnecessarily long). As far as I know, the first game isn't really part of the Yoshi series, so appearing in that wouldn't make them eligible for an article in a Yoshi wiki. While Yoshi is in Super Mario World, I still wouldn't put it as part of the series. Of course, that's just my opinion.