These are professionally prepared skeleton mounts. Each skeleton is cleaned and articulated in a natural posture on a wooden base with a removable clear acrylic cover. The shell of this turtle skeleton specimen is natural colored (i.e., not bleached).
This is a skeleton of a pond slider. The case is 8.75" long by 3.25" wide, and 6.75" high, including the cover. Overall, it weighs 1.05 lbs.