Turtles element

Turtles — The turtle as creaturely form and subject, defined by the paired shells—the domed carapace and the ventral plastron—that enclose the body.

Getty AAT: Members of the order of armored marine or terrestrial reptiles usually having a shell comprising a top (carapace) and a bottom (plastron) that arise from the ribs and often join one another along each side of the body, creating a rigid skeletal box, a skull without a pineal opening, and toothless jaws. (AAT 300310264)