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Brian HensonArthur Rizzic (voice)
Sally KellermanPteranodon (voice)
Allan TrautmanLieutenant / Rocco (voice)
Richard SimmonsRichard Simmons Dinosaur (voice)
Suzie PlaksonMonica Devertebrae (voice)
Florence StanleyGrandma Ethyl Phillips (voice)
Sam McMurrayRoy Hess (voice)
