Titanosauria

Titanosauria is a clade of sauropod dinosaurs within Titanosauriformes, including saltasaurids and many of the largest land animals.

Sauropoda: Sauropoda is the dinosaur group of long-necked, usually gigantic herbivores that walked on four pillar-like limbs. Titanosauria is one of the major sauropod clades.
Argentinosaurus: Argentinosaurus is a giant titanosaur known from fragmentary fossils found in Argentina. Its immense estimated size illustrates the largest end of titanosaur diversity.
Sauropod gigantism: Sauropod gigantism is the evolution of exceptionally large body size in sauropod dinosaurs. Titanosaurs include several of the largest animals known to have lived on land.
Diplodocoidea: Diplodocoidea is a sauropod clade that includes diplodocids and rebbachisaurids. These sauropods belong to a separate major branch from Titanosauria.
Lithostrotia: Lithostrotia is a derived clade of titanosaurs characterized by features including procoelous anterior caudal vertebrae. Many familiar Late Cretaceous titanosaurs belong to this more derived subgroup.
Saltasaurus: Saltasaurus is a Late Cretaceous titanosaur from Argentina, notable for body armor. It is a well-known example of an armored, relatively small-bodied titanosaur.
Sauropod egg: A sauropod egg is the usually spherical, mineralized egg laid by a sauropod dinosaur. Fossilized titanosaur eggs reveal reproductive behavior and nesting grounds.
Brachiosauridae: Brachiosauridae is a sauropod family known for long forelimbs and elevated shoulders. Brachiosaurids are titanosaurs' close relatives within Titanosauriformes, but outside Titanosauria.
Saltasauridae: Saltasauridae is a family of relatively small-bodied, often osteoderm-bearing titanosaurs. This distinctive titanosaur family includes Saltasaurus and close relatives.
Rapetosaurus: Rapetosaurus is a titanosaur known from exceptionally informative fossils found in Madagascar. Its remains include juveniles and adults, clarifying titanosaur growth and anatomy.

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BrachiosaurusCompared with: Later titanosaurs provide a contrast in sauropod diversity and geological age.