Janenschia

Say it yan-ensh-ee-ah. The name means ‘named after Janansch’.

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

Length: 20 m
Diet: Plant-eater
When: Late Jurassic154 to 151 million years ago
Fossils found in: Tanzania
Named by: Wild (1991)
Family tree: Dinosauria › Saurischia › Sauropodomorpha › Sauropoda › Macronaria › Titanosauriformes › Titanosauria

Where Janenschia 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

Barosaurus · same country
Dryosaurus · same country
Elaphrosaurus · same country
Giraffatitan · same country
Kentrosaurus · same country
Camptosaurus
Chinshakiangosaurus
Chungkingosaurus

Other sauropods

Euhelopus Late Jurassic
Europasaurus Late Jurassic
Giraffatitan Late Jurassic
Haplocanthosaurus Late Jurassic
Supersaurus Early Cretaceous
Barosaurus Late Jurassic
Mamenchisaurus Late Jurassic
Apatosaurus Late Jurassic

Source: Janenschia 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.