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 ().
Megalosaurus
Since the first finds, many other "Megalosaurus" bones have been recovered; however, no complete skeleton has yet been found. Therefore, the details of its physical appearance cannot be certain. However, a full osteology of all known material was published in 2010 by Benson.
Traditionally, most texts, following Owen's estimate of 1841, give a body length of thirty feet or nine metres for "Megalosaurus". The lack of an articulated dorsal vertebral series makes it difficult to determine an exact size. David Bruce Norman in 1984 thought "Megalosaurus" was seven to eight metres long. Gregory S. Paul in 1988 estimated the weight tentatively at 1.1 tonnes, given a thighbone seventy-six centimetres long. The trend in the early twenty-first century to limit the material to the lectotype inspired even lower estimates, disregarding outliers of uncertain identity. Paul in 2010 stated "Megalosaurus" was six metres long and seven hundred kilogrammes heavy. However, the same year Benson claimed that "Megalosaurus", though medium-sized, was still among the largest of Middle Jurassic theropods. Specimen BMNH 31806, a thighbone 803 millimetres long, would indicate a body weight of 943 kilogrammes, using the extrapolation method of J.F. Anderson — which method, optimised for mammals, tends to underestimate theropod masses by at least a third. Furthermore, thighbone specimen OUM J13561 has a length of about eighty-six centimetres.