Not much is known about the possible existance of the Teyuwasu dinosaur. Its known proven the classification or even if this is actually another species of dinosaur.

There was only leg bones including a femur and a tibia discovered. These fossils were discovered at the Santa Maria Formation in Brazil. The name was given by Kischlat in the year 1999. It was named after the South American paleotologist Dr. M.C. Barberena.