Osteographie ou Description iconographique comparee du squelette et du système dentaire des Mammifères recents et fossiles, Paris, J.B. Baillière et fils, 1839-1864. Henri Marie Ducrotay, This detailed illustration features side views of various skulls and skeletal structures of different species. At the top, multiple silhouettes of the same species are displayed, showcasing variations in skull shape and structure. Beneath, labeled specimens include distinct features of different organisms, highlighting the diversity in cranial anatomy. Each section allows for comparative study, emphasizing the evolutionary adaptations and functional morphology present in these species. The meticulous rendering of the skulls provides insight into the anatomical complexities and characteristics that define each organism.