Piatnitzkysaurus

Piatnitzkysaurus is a genus of neotheropod dinosaur that lived during the Late Jurassic period in what is now Argentina. The type species, Piatnitzkysaurus Patagonia, was described by Jose Bonaparte in 1978. Fossil remains were discovered in the Chubut Province, part of the Patagonia region of South America. These fossils indicate that Piatnitzkysaurus was a medium-sized theropod, likely measuring around six to seven meters in length.

Piatnitzkysaurus belonged to the family Allosauridae, a group of large carnivorous dinosaurs that were widespread during the Jurassic. Its skeletal features suggest it was a bipedal predator. Like other allosaurids, it likely possessed a large head with sharp teeth, suitable for hunting. The discovery of Piatnitzkysaurus contributes to our understanding of dinosaur diversity in Gondwana during the Late Jurassic, a time when the continents were arranged differently. While not as well-known as some of its North American relatives like Allosaurus, Piatnitzkysaurus is an important find for paleontologists studying the evolution and distribution of theropod dinosaurs.