Dasaurus tocantinensis: Giant New тιтanosaur from Brazil Bridges Europe–Africa–South America!

Paleontologists have announced Dasaurus tocantinensis, a colossal new тιтanosaur sauropod from the Early Cretaceous Tocantins Basin in central Brazil, whose 120-million-year-old remains provide the strongest fossil evidence yet of direct biogeographic links among Europe, Africa, and South America during the final stages of Gondwana’s breakup.

Described in Nature Communications (March 12, 2026), the partial skeleton—found near Palmas, Tocantins—includes a mᴀssive femur (2.1 m long), dorsal vertebrae, and osteoderms. Estimated at 25–30 meters long and weighing 40–50 tons, D. tocantinensis rivals the largest known тιтanosaurs. Its distinctive “dagger-like” neural spines and unique vertebral laminae closely match those of the European Lirainosaurus and African Paraliтιтan, creating an unmistakable trans-Atlantic “signature.”

Lead author Dr. Aline Ghilardi (Federal University of Tocantins) explains: “These shared anatomical traits cannot be explained by convergence alone. They point to a once-continuous land corridor linking what are now three continents.” The discovery supports a brief Early Cretaceous connection via the Walvis Ridge and Rio Grande Rise, allowing тιтanosaurs to disperse before full oceanic separation.

The fossils were recovered from fluvial sandstones of the Itapecuru Formation, preserving evidence of a lush, river-dominated landscape. CT scans reveal rapid growth rates typical of тιтanosaurs, suggesting these giants thrived in a warm, interconnected world.

“This find rewrites the paleobiogeography of the southern continents,” adds co-author Dr. Philip Mannion (University College London). “It shows South America was not isolated as early as previously thought.”

As more Tocantins material is prepared, Dasaurus tocantinensis promises to illuminate how the last giant herbivores roamed a shrinking supercontinent—before the Atlantic’s final rift separated their descendants forever. A true bridge across lost worlds.