Named By: Richard Butler et al - 2010.
Classification: Chordata, Reptilia, Dinosauria, Ornithischia, Heterodontosauridae.
Species: F. haagarorum (type).
Size: 65-75 centimetres long.
Known locations: USA, Morrison Formation, Coloradao, Fruita.
Time period: Tithonian of the Jurassic.
Fossil representation: Several individuals of partial skeletons.
estimate of 0.5-0.75 kilos, Fruitadens is by far
one of the smallest
known dinosaurs. Recovered specimens are thought to represent juveniles
and sub adults that are almost fully grown. In appearance Fruitadens
considered to have been similar to Heterodontosaurus,
although it may
have been closer to Echinodon and Tianyulong
in size, and is also
nearer to them than it is to Heterodontosaurus in
the fossil record.
The lightweight build of Fruitadens means that it would have been a very agile runner, easily able to navigate the forest floor while maintaining running speed. The teeth and close association with other heterodontosaurids has brought the suggestion that Fruitadens was an omnivore.
- A new Upper Jurassic heterodontosaurid from North America: lower limits of ornithischian dinosaur body size inferred from North America. - Proceedings of the Royal Society B: Biological Sciences 277:375-381. - R. J. Butler, P. M. Galton, L. B. Porro, L. M. Chiappe, D. M. Henderson & G. M. Erickson - 2010.
- Anatomy and Cranial Functional Morphology of the Small-Bodied Dinosaur Fruitadens haagarorum from the Upper Jurassic of the USA. - PLoS ONE 7 (4): e31556. - R. J. Butler, L. B. Porro, P. M. Galton & L. M. Chiappe (A. A. Farke, ed)- 2012.