From the [mid-70s to the mid-90s](http://mentalfloss.com/article/81636/13-discontinued-menu-items-taco-bell), it was called the Bell Beefer (or just Beefer). They also tried their hands at salads and pizza (though one could argue mexican pizza has its place there). 

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McDonald's actually used to have a pizza as well. I think the last remaining one stopped serving them not too long ago.