Elaphrosaurus  Elaphrosaurus ( ) is a genus of ceratosaurian theropod dinosaur that lived approximately 154 to 150 million years ago during the later part of the Jurassic Period in what is now Tanzania in Africa. "Elaphrosaurus" was a medium-sized but lightly built member of the group that could grow up to long. Morphologically, this dinosaur is significant in two ways. Firstly, it has a relatively long body but is very shallow-chested for a theropod of its size. Secondly, it has very short hindlimbs in comparison with its body. Phylogenetic analyses indicate that this genus is likely a ceratosaur. Earlier suggestions that it is a late surviving coelophysoid have been examined but generally dismissed. "Elaphrosaurus" is currently believed to be a very close relative of "Limusaurus", an unusual beaked ceratosaurian which may have been either herbivorous or omnivorous. The type specimen of "Elaphrosaurus bambergi" HMN Gr.S. 38-44 was recovered in the Middle Dinosaur Member of the Tendaguru Formation in Tanzania.The specimen was collected by Werner Janensch, I. Salim, H. Reck, and Parkinson in 1910 in gray, green, red, sandy marl that was deposited during the Kimmeridgian stage of the Jurassic period, approximately 157 to 152 million years ago. This specimen is housed in the collection of the Natural History Museum of Berlin, Germany. "Elaphrosaurus" was described and named by Werner Janensch in 1920 and the type species is "Elaphrosaurus bambergi". The genus name "Elaphrosaurus" is derived from the Greek words "elaphros" (ελαφρός) meaning "light to bear" as in "light-footed", a reference to its presumed high running speed and "sauros" ("σαῦρος") meaning "lizard"; thus, "light-footed lizard". The specific name honours the industrialist Paul Bamberg for his financial support of the Tendagaru expeditions. HMN Gr.S. 38-44 consists of 18 presacral vertebrae, 5 sacral vertebrae, 20 caudal vertebrae, a pelvic girdle, a nearly complete left hindlimb (missing only some phalanges), several isolated metacarpals, and a humerus.