Indian Tertiary and Post Tertiary Vertebrata, Calcutta, Geological Survey Office, 1874-1902, India, Paleontology, Vertebrates, Fossil, This illustration showcases a series of detailed line drawings of various fossilized vertebrate skulls and jaw fragments, likely representing different species from the Tertiary period. Each specimen is labeled with numerical designations for reference, and the anatomical features are meticulously rendered to highlight the bone structure. The composition includes multiple perspectives of each specimen, providing a comprehensive view for study. The drawings emphasize the complexity of the fossils, showcasing teeth, mandibular forms, and other cranial characteristics that are essential for paleontological analysis and the understanding of evolutionary biology.