Dicraeosaurus
Fossils  of Dicraeosaurus have been found in the rocks of Tendaguru Hill in Tanzania. The rocks also yield fossils of Giraffatitan and Kentrosaurus. As there was a distinct difference in size between these animals, they would probably have browsed for vegetation at different levels, allowing them to co-exist without significant competition. The first fossil of Dicraeosaurus was discovered in 1914.