Brachiosaur is a term used to describe a genus of large sauropod dinosaurs that lived between 156-145 million years ago in the Late Jurassic period. There are several synonyms for this term, including Giraffatitan, which is a more recently coined name for the same species. Many paleontologists also use the terms Brachiosaurus altithorax and Brachiosaurus brancai interchangeably with Brachiosaur. Other closely related dinosaurs that share similar body features and characteristics include Camarasaurus and Apatosaurus. Despite being extinct for millions of years, Brachiosaur and its synonyms continue to captivate the interest and imagination of scientists and dinosaur enthusiasts alike.