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 ().
Bruhathkayosaurus
No total body size estimates for "Bruhathkayosaurus" have been published, but paleontologists and researchers have posted tentative estimates on the Internet. In a blog post from June 2001, Mickey Mortimer estimated that "Bruhathkayosaurus" could have reached in length and might have weighed 175–220 tons, but in later blog posts retracted these estimates, reducing the estimated length of "Bruhathkayosaurus" to , and declined to provide a new weight estimate, describing the older weight estimates as inaccurate. In a May 2008 article for the weblog "Sauropod Vertebra Picture of the Week", paleontologist Matt Wedel used a comparison with "Argentinosaurus" and calculated the weight of "Bruhathkayosaurus" at up to 126 metric tons.