Historical illustration from 1852 showing four detailed skeletal reconstructions of the North American Mastodon giganteus. The drawings depict the full skeletons with distinct features such as large curved tusks, robust limb bones, and rib cages. Two skeletons are shown in side profile facing each other at the top, while two others are positioned below, one viewed from the side and the other three-quarter frontal. The bones are intricately rendered, highlighting the mastodon’s massive build and differences from modern elephants. The background is plain, emphasizing the anatomical details of the prehistoric mammal’s structure.