Piatnitzkysaurids lived in the Middle and Late Jurassic era, in what are now Utah and Argentina.
This family includes only three genus, all of them being medium-sized dinosaurs. Also, Piatnitzkysaurus floresi is the type species.
There are only three genus in this family, listed below.
- Condorraptor currumili;
- Marshosaurus bicentesimus;
- Piatnitzkysaurus floresi.