Ypupiara

Ypupiara (meaning "the one who lives in the water") is an extinct genus of unenlagiine theropod from the Late Cretaceous Serra da Galga Formation of Brazil. It was the first member of the Dromaeosauridae to be discovered in South America and the first member of the Unenlagiinae to be discovered, but not the first to be identified as such. The type and only species, Y. lopai, is known solely from a specimen that was destroyed in a fire in 2018.

==Discovery and naming== The holotype, DGM 921-R, a right maxilla and dentary (which was associated with a fish jaw), was discovered in a layer of the Late Cretaceous Serra da Galga Formation of Brazil. It was found by Alberto Lopa sometime in the 1950s, possibly in 1957, after which Llewellyn Ivor Price listed the fossil as belonging to an indeterminate vertebrate. The specimen was then placed in storage at the National Museum of Brazil and was not acknowledged again for another 80 years.