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 ().
Brachiosaurus
Most estimates of "Brachiosaurus altithorax" size are based on the related African brachiosaurid "Giraffatitan" (formerly known as "Brachiosaurus brancai"), which is known from much more complete material than "Brachiosaurus". The two species are the largest brachiosaurids of which relatively extensive remains have been discovered. There is another element of uncertainty for the North American "Brachiosaurus" because the type (and most complete) specimen appears to represent a subadult, as indicated by the unfused suture between the coracoid, a bone of the shoulder girdle that forms part of the shoulder joint, and the scapula (shoulder blade). Over the years, the mass of "B. altithorax" has been estimated at , , , , , and . The length of "Brachiosaurus" has been estimated at 20–21 meters (66–69 ft) and , and its height at and 12–13 meters (39–43 ft).