Titanidosaurus

Titanidosaurus is an extinct species of Titanosaur that lived in what is now Argentina, South America in Late Cretaceous from 85 million years ago to 66 million years ago.. It was among the largest dinosaurs on planet Earth, about the size of the similar-looking Brachiosaurids, including the last ever Brachiosaurid species, the Undersaurus. Titanidosaurus, like all sauropods, was a herbivore that fed on leaves, fruits, ferns, cycads, and horsetails. Unlike Brachiosaurids, which had nostrils on the tips of their snouts rather than on the large chambers on their heads (which were likely used for vocalization), Titanidosaurus did indeed had nostrils on their chamber-like nasal structures, making the heads of Titanidosaurus resemble outdated Barachiosaurid heads. It is unknown why Titanidosaurus suddenly became extinct.