This is a vintage scientific illustration of a reptile skeleton. The image is sepia-toned, giving it an aged appearance. The central focus is a complete skeletal structure of a reptile, depicted in a side view. The skeleton is detailed, showing the ribs, vertebrae, skull, limbs, and claws. Around the central skeleton are various individual bone structures, including the skull from different angles, leg bones, and foot structures. These are arranged around the main illustration, likely to highlight specific anatomical features. The style is reminiscent of 19th-century scientific drawings, with precise linework and shading to convey the form and structure of the bones. The background is a plain, off-white color, typical of old scientific illustrations. The image is labeled with numbers, likely corresponding to specific bones or parts of the skeleton.