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.