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 ().
Largest prehistoric animals
Some of the largest-known phytosaurs include "Redondasaurus" with a length of 6.4 meters and "Smilosuchus" with a size of 6.8 meters.
Many large sauropods are still unnamed and may rival the current record holders.The largest-known thyreophoran was "Ankylosaurus" at in length and in weight. "Stegosaurus" was also long but around tonnes in weight.