Isisaurus

Say it iss-ee-sore-us. The name means ‘ISI (Indian Statistical Institute) lizard’.

No length given in the museum's record.

The museum gives no length for this dinosaur, so we cannot draw it to scale.Body shape drawn for this site, showing the general build of sauropods

Diet: Plant-eater
When: Late Cretaceous71 to 66 million years ago
Fossils found in: India
Named by: Jain and Bandyopadhyay (1997)
Family tree: Dinosauria › Saurischia › Sauropodomorpha › Sauropoda › Macronaria › Titanosauriformes › Titanosauria › Lithostrotia

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

Sauropods. Long-necked, four-legged plant-eaters, the biggest animals ever to walk on land. See all 59

Lived at the same time

Other sauropods

Ampelosaurus Late Cretaceous
Magyarosaurus Late Cretaceous
Neuquensaurus Late Cretaceous
Alamosaurus Late Cretaceous
Nemegtosaurus Late Cretaceous
Opisthocoelicaudia Late Cretaceous
Saltasaurus Late Cretaceous
Dreadnoughtus Late Cretaceous

Source: Isisaurus 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.