Mendozasaurus is a genus of titanosaurian sauropod dinosaur. Brontosaurus is a genus of sauropod dinosaur. Microcoelus is a dubius genus of small Titanosaurian sauropod dinosaur native to Argentina. Lapparentosaurus is a genus of sauropod dinosaur from the Middle Jurassic. Comahuesaurus is a genus of sauropod dinosaur of the family Rebbachisauridae. Lessemsaurus is an extinct genus of sauropod dinosaur belonging to Lessemsauridae. Bothriospondylus ("excavated vertebra") is a dubious genus of neosauropod sauropod dinosaur. Chebsaurus is a genus of quadrupedal, herbivorous, cetiosaurid sauropod dinosaur, specifically a eusauropod. This species possessed the longest cervical rib of any described sauropod dinosaur, measuring . Ultrasaurus is a genus of sauropod dinosaur discovered by Haang Mook Kim in South Korea. This unique ilium would have given it the largest leg muscles of any sauropod dinosaur. "The Archbishop" is a giant brachiosaurid sauropod dinosaur similar to "Brachiosaurus" and "Giraffatitan". "Nurosaurus" (Nur-o-saw-rus, meaning "Nur lizard") is the informal name for a genus of sauropod dinosaur. Brachytrachelopan is a short-necked sauropod dinosaur from the Late Jurassic (Oxfordian to Tithonian) of Argentina. Also, the sauropod dinosaur "Sauroposeidon" is estimated to be taller and possibly heavier than "Giraffatitan".