Allosaurus Rats
The "allosaurus rats" featured in Super Mario Bros. are probably the most understated and overlooked creatures in the film. Although they are only in a few scenes, they add an incredible sense of atmosphere and quirkiness to the world of Dinohattan. Unfortunately, some more involved scenes featuring the creatures were cut from the finished film. However, you can see some preparation shots for the deleted scene below along with photographs detailing the development of the creatures. Thanks again to MEL (Makeup & Effects Laboratory) for providing the photographs.
Schematics
Prototype Designs
Sculpts (Un-painted)
Sculpts (Painted)
Mechanical Workings
Related Links:
SMB Archive's Interview with Guy Himber
SMB Archive's Interview with MEL (Makeup & Effects Laboratory)
SMB Archive's Interview with Mark Miller and Mike Harding