Histoire naturelle, générale et particulière des céphalopodes acétabuifères vivants, et fossiles, Paris, Impr. de A. Lacour, 1835-1848, cephalopod, fossil, The illustration features detailed anatomical studies of an octopus, showcasing various internal structures and reproductive organs. Each section emphasizes the complexity of the organism, including the arrangement of the body parts, such as the siphon, gonads, and other internal organs. Labels provide clarity for each depicted element, allowing for a comprehensive understanding of the octopus's anatomy. The intricate lines and shading highlight the unique features and textures of these marine creatures, emphasizing their biological uniqueness and the intricacies of cephalopod anatomy.