Mounted, Juvenile Sauropod (Suuwassea?) Dinosaur Forelimb - Wyoming
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This is a 47" long (articulated length) juvenile sauropod (Suuwassea?) dinosaur left front leg. It includes a humerus, radius and ulna, mounted on a custom metal stand. These limb bones were collected from near Kaycee, Wyoming. This is truly an incredible display piece!
The quality of preservation of these bones is quite nice, with a dark brown-black preservation color. Each of the bones were found fragmented within the rock, resulting in necessary restoration to each bone with the majority of restoration occurring to the humerus. While there is no restoration in the form of a whole portion of the bone being restored, there are large spots of gap fill within repaired cracks where the bone crumbled upon extraction/repair. This is especially evident in the humerus by the criss-crossing repair lines through the bone. The radius has repaired cracks throughout with gap fill restoration near the middle of the diaphysis. The ulna also has many repaired cracks throughout the bone and small spots of gap fill restoration. The osteons (bone cells) of each bone are visible along both ends of the bones as a result of weathering of the cortical bone over time.
Humerus - 26.4" long, 11" wide (proximal end), 7.1" wide (distal end)
Ulna - 20.4" long, 6.1" wide (proximal end), 2.7" wide (distal end)
Radius - 18.4" long, 4.1" wide (proximal end), 3.6" wide (distal end)
On the metal stand this piece stands just under 4 feet tall. The metal work to mount it was well done and all of the bones are easily removable. The ulna has pegs that have been mounted within the bone. These pegs fit into small drilled holes within the radius, holding the two bones together in their anatomical position. The Humerus was mounted backwards, so the anterior face of the bone is facing posteriorly.
Because of the location from which these bones were collected, along with the size of the leg, it is believed that these came from a sauropod of the genus Suuwassea. These dicraeosaurid (sister group to Diplodocidae) sauropods were smaller than most of the other sauropods that come out of the Morrison Formation.