9949 Brontosaurus
This minor planet was named after Brontosaurus, a gigantic quadruped sauropod dinosaurs, which walked on all four legs and lived in the Upper Jurassic. Adult individuals measured up to 20 meters and had a weight of up to 20 tons. Many Fossils have been found in the United States. Brontosaurus is one of the best-known dinosaurs. The official naming citation was published by the Minor Planet Center on 20 November 2002 ().
Chasmosaurus
Chasmosaurus ( ) is a genus of ceratopsid dinosaur from the Upper Cretaceous Period of North America. Its name means 'opening lizard', referring to the large openings (fenestrae) in its frill (Greek "chasma" meaning 'opening' or 'hollow' or 'gulf' and "sauros" meaning 'lizard'). With a length of and a weight of , "Chasmosaurus" was a ceratopsian of average size. Like all ceratopsians, it was purely herbivorous. It was initially to be called "Protorosaurus", but this name had been previously published for another animal. All specimens of "Chasmosaurus" were collected from the Dinosaur Park Formation of the Dinosaur Provincial Park of Alberta, Canada. "C. russelli" comes from the lower beds of the formation while "C. belli" comes from middle and upper beds.