A number of Titanosaurus fossils have been found in what were mangrove-coastal environments in the Cretaceous Age. Mangrove environments included estuaries and marine shorelines in tropical and subtropical zones. The watery swamps may have helped suspend their bodies.
Titanosaurus remains have also been found on floodplains. Again, the presence of water may have helped suspend their weight. But the floodplains contained more gymnosperms than the mangrove swamps. It is believed that gymnosperms, non-flowering plants prevalent in the Cretaceous, were their preferred food.
With its long neck, the Titanosaurus could browse the gymnosperm treetops and large ferns. Paleontologists believe that when Titanosaurus was in the open uplands, the species traveled in large herds to protect themselves from predators such as Giganotosaurus and Tyrannosaurus Rex.
