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 ().
Ankylopollexia
Primitive ankylopollexians tended to be smaller as compared to the larger, more derived hadrosaurs. Of course, there are exceptions to this trend. A single track from a large ornithopod, likely a relative of "Camptosaurus", was reported from the Lourinhã Formation, dating to the Jurassic in Portugal. It had an estimated hip height of around , nearly a metre larger than the holotype femur of contemporary relative "Draconyx", estimated by the authors to be in weight. The primitive styracosternan "Iguanacolossus" was named for its distinct robustness and large size, likely around in length. Regarding hadrosaurs, one of the more basal members of Hadrosauroidea, the Chinese genus "Bolong", is estimated to have been around . Another exception of this trend is "Tethyshadros", a more derived genus of Hadrosauroidea. Estimated to have weighed , "Tethyshadros" have been found only on certain islands in Italy. Its diminuitive size is explained by insular dwarfism.