much larger than previously known (). That means, that the ancestors Ampelosaurus were slightly smaller than itself. 18 humeri are also known, but none of them approach the size of the largest femur. The humeri do not have a free medullary cavity. The humeri are robust, about long, with very expanded distal and proximal ends. Three different types of osteoderms have been recovered at Bellevue. Two with large spines have been uncovered. At the base of each spine, which is about tall, are two large foramina. The internal faces are all concavo-convex and have a ridge opposite the spine. In side view, they have two sections, a low half that progressively thickens, and a spine. Vertebrae The holotype specimen of A. atacis is a group of three connected dorsal vertebrae. Cervical vertebrae are uncommon from Bellevue and most of them are poorly preserved. The vertebrae are opisthocoelous, with centra that lengthen toward the rear. Neural spines have been preserved on the vertebrae, and they face toward the rear. Two dorsal vertebrae were preserved with a complete, but very crushed neural arch, a neural spine with a characteristic shape: it is very widened distally and narrows downwards. The vertebrae also have an internal structure that is spongy, with very large cells. The caudal vertebrae are all strongly procoelous and are compressed on the sides. The neural spines of the caudal vertebrae are very narrow and very tall and point toward the rear. The middle caudal vertebrae are more compressed on the sides that the others. Also, the centrum of middle caudal vertebrae is longer proportionally. Two sacral vertebrae were known from Bellevue. They are poorly preserved, and are thought to belong to a juvenile. A complete sacrum was also found in 2002. Distinguishing anatomical features This set of characters was identified by Le Loeuff in his description of Ampelosaurus to distinguish it from all other genera: teeth that weakly spatulate; a laterally widening distal extremity of neural spines on the dorsal vertebrae; neural arch of the dorsal vertebrae inclining strongly towards the rear; the lack of a distal expansion on the scapular blade; the presence of a light, ventral crest on top of the scapula; the presence of plate, bulb, and spine shaped osteoderms; and, in 2005, Le Loeuff added that the constriction of the neural spine on the dorsal and cervical vertebrae was also probably a characteristic of Ampelosaurus. Neuroanatomy