Barosaurus

Barosaurus was a large, long-necked, plant-eating dinosaur. It lived about 156 to 145 million years ago in the later Jurassic period. The name "Barosaurus" means "heavy lizard". It was named by Othniel C. Marsh in 1890. "Barosaurus" fossils have been found in western North America and East Africa.
The skeleton as set up here suggests the animal could strip leaves or fronds from the tallest trees. Indeed, "Barosaurus" was differently proportioned to its close relative "Diplodocus". It had a longer neck and shorter tail, but was about the same length overall. It was longer than "Apatosaurus" or "Brontosaurus", and its skeleton was less robust (slimmer).
Sauropod skulls are rarely preserved, and no "Barosaurus" skull has yet been found.