Well-known genera include "Brachiosaurus", "Diplodocus", "Apatosaurus", "Brontosaurus", and "Mamenchisaurus". Other species, including "Triceratops", "Brachiosaurus", and "Spinosaurus" have also played significant roles. ILM also designed some dinosaurs entirely through CGI, including "Ankylosaurus" and "Brachiosaurus". Similar aquatic behavior was commonly depicted for other large sauropods, such as "Brachiosaurus" and "Apatosaurus". "The Archbishop" is a giant brachiosaurid sauropod dinosaur similar to "Brachiosaurus" and "Giraffatitan". These are the Moschops, Gallimimus, Dimetrodon, Dimorphodon, Pteranodon, and Brachiosaurus. The subgroup Titanosauriformes comprises all sauropods descended from the common ancestor of "Brachiosaurus" and "Saltasaurus". They are shocked to see living dinosaurs, including "Brachiosaurus", upon arriving. In 1904, Riggs described the holotype material of "Brachiosaurus" in more detail, especially the vertebrae. No mount of "Brachiosaurus" was attempted because only 20% of the skeleton had been recovered. Also under Macronaria are "Camarasaurus", "Brachiosaurus," and Titanosauria. Paul used these differences to create a subgenus he named "Brachiosaurus (Giraffatitan) brancai". Riggs in his publications played into this by emphasizing the enormous magnitude of "Brachiosaurus". Near the end, a massive alien resembling a Brachiosaurus appeared. Though possibly belonging to "Brachiosaurus", the authors cautiously classified it as an indeterminate brachiosaurid.