Janenschia

Janenschia was first thought to be a different dinosaur called Gigantosaurus, but later scientists gave it its own name in 1991.1

Its fossils were discovered at a famous fossil site called Tendaguru Hill in Tanzania, where many other giant dinosaurs were also found.1

Janenschia is one of the oldest known members of a group called Titanosauria, which includes some of the heaviest dinosaurs ever.1

Some bones that were once thought to belong to Janenschia were later identified as a new dinosaur called Wamweracaudia.12

Janenschia walked on four thick, pillar-like legs and had a very long tail to balance its long neck.1

Scientists now think Janenschia was not a true titanosaur, but a close relative that lived earlier in the Jurassic.2