A history of British fossil reptiles, London, Cassell & Company Limited, 1849-1884, Great Britain, paleontology, fossils, reptile fossils, fossil stories, arthropod, The illustration showcases a series of detailed anatomical studies of cross-sections of skulls belonging to various species of reptiles. Each section is meticulously labeled with numbers indicating different features, highlighting the unique structures and cavities present in their skulls. The topmost section displays a comparative view of different skull shapes, each characterized by distinct patterns of holes and ridges. The layers below provide insight into the structural variations among the specimens, emphasizing the complexity of reptilian skull anatomy and the evolutionary adaptations that have occurred within the group.