Dinosaurs · Large theropod

Piatnitzkysaurus

Say it pye-at-nits-key-sore-us. The name means ‘Piatnitzkys lizard’.

Piatnitzkysaurus beside a person 1.75 m tall. Ticks mark every metre.Body shape drawn for this site, showing the general build of large theropods

Length: 4.2 m
Diet: Meat-eater
When: Late Jurassic164 to 159 million years ago
Fossils found in: Argentina
Named by: Bonaparte (1979)
Family tree: Dinosauria › Saurischia › Theropoda › Megalosauridae › Eustreptospondylinae

Where Piatnitzkysaurus sits in the age of dinosaurs.Periods from the ICS chart; dinosaur dates from the Natural History Museum

Large theropods. Big two-legged meat-eaters, such as Tyrannosaurus. See all 63

Lived at the same time

Other large theropods

Eustreptospondylus Mid Jurassic
Torvosaurus Late Jurassic
Megalosaurus Mid Jurassic
Yangchuanosaurus Late Jurassic
Dubreuillosaurus Late Jurassic
Metriacanthosaurus Late Jurassic
Poekilopleuron Mid Jurassic
Sinraptor Mid Jurassic

Source: Piatnitzkysaurus in the Natural History Museum Dino Directory, read 12 November 2026. Sizes are the museum's estimates for a typical adult. "Lived at the same time" lists dinosaurs whose dates overlap, which does not always mean they met.