The name means "Fruita tooth", in reference to Fruita, Colorado, where its fossils were first found. It is known from partial skulls and skeletons from at least four individuals from rocks of the Morrison Formation in Colorado. "Fruitadens" is a small ornithischian dinosaur, with young adults estimated at 65 to 75 cm (26 to 30 in) in length and 0.5 to 0.75 kg (1.1 to 1.7 lb) in weight. 