Horner, J. R. 2000. The bone histology of the hadrosaurid dinosaur Maiasaura peeble-sorum: Growth dynamics and physiology based on an ontogenetic series of skeletal elements. Journal of Vertebrate Paleontology 20: 109-123.
Horner, J. R. and Makela, R. 1979. Nest of juveniles provides evidence of family structure among dinosaurs. Nature 282: 296-298.
Horner, J. R. and Dobb, E. 1997. Dinosaur Lives. San Diego, California: Harcourt Brace and Company.
Horner, J. R., Weishampel, D. B. and Forster, C. A. 2004. "Hadrosauridae". In Weishampel, D. B., Dodson, P. and Osmólska, H. (Eds), The Dinosauria (2nd Edition). Berkeley, California: University of California Press. pp. 438-463.
Lockley, M. G., Hunt, A. P. and Matsukawa, M. 1999. Three age groups of ornithopods inferred from footprints in the Mid-Cretaceous Dakota Group, eastern Colorado, North America. Palaeogeography, Palaeoclimatology, Palaeoecology 147: 39-51.
Nadon, G. C. 1993. The association of anastomosed fluvial deposits and dinosaur tracks, eggs, and nests: implications for the interpretation of floodplain environments and a possible survival strategy for ornithopods. Palaios 8: 31-44.
Norman, D. D. 1989. "Ornithopod dinosaurs; relationships, structure, and habits". In Padian, K. and Chure, D. J. (Eds), The Age of Dinosaurs. Paleontological Society, Short Courses in Paleontology 2: 58-70.
Norman, D. B. 2004. "Basal Iguanodontia". In Weishampel, D. B., Dodson, P. and Osmólska, H. (Eds), The Dinosauria (2nd Edition). Berkeley, California: University of California Press. pp. 413-437.
Norman, D. B. and Weishampel, D. B. 1985. Ornithopod feeding mechanisms: their bearing on the evolution of herbivory. American Naturalist 126: 151-164.
Norman, D. B., Sues, H.-D., Witmer, L. M. and Coria, R. A. 2004. "Basal Ornithopoda". In Weishampel, D. B., Dodson, P. and Osmólska, H. (Eds), The Dinosauria (2nd Edition). Berkeley, California: University of California Press. pp. 393-412.
Stokes, W. L. 1987. Dinosaur gastroliths revisited. Journal of Paleontology 61: 1242-1246.
Weishampel, D. B. 1981. Acoustical analysis of potential vocalization in lambeosaurine dinosaurs (Reptilia, Ornithischia). Paleobiology 7: 252-261.
Weishampel, D. B. 1984. Evolution of jaw mechanisms in ornithopod dinosaurs. Advances in Anatomy, Embryology, and Cell Biology 87: 109.
You visit the, gift-shop of your local natural history museum and, as you reach into a bin of plastic models of dinosaurs, pterosaurs, and mammoths, your hand encounters an upraised ridge on one model. You see that it is Stegosaurus and the "ridge" is actually a row of plates on its dorsal surface. While you are waiting at the checkout counter, you notice a poster that depicts a stegosaur in life, with its plates overlapping and arranged in two rows. You look at the model in your hand and see that it only has a single row of plates that do not overlap.
Which restoration is most likely, based on the available evidence? What was the function of the plates? How could the arrangement of the plates have an impact on interpretations about their function?
Was this article helpful?