Piatnitzkysaurids were among the first large theropods present in South America, and are evidence for a radiation of basal tetanurans in the middle Jurassic.

[1][3] Due to the strong resemblance to Piatnitzkysaurus, it has been suggested that Condorraptor could be better interpreted as the result of individual variation within the species and not a separate taxon.

The main noted differences between the two species include both a less well developed enemial crest and a first sacral vertebra with a shallower fossa in Condorraptor.

[5] In 2019, Rauhut and Pol described Asfaltovenator vialidadi, a basal allosauroid displaying a mosaic of primitive and derived features seen within Tetanurae.

A cladogram displaying the relationships they recovered is shown below:[6] Monolophosaurus Spinosauridae Megalosauridae Xuanhanosaurus Piatnitzkysauridae Asfaltovenator Metriacanthosauridae Allosaurus Carcharodontosauria