Indian, Tertiary and post-Tertiary, Vertebrata, Calcutta, Geological Survey Office, 1874-1902, India, Paleontology, Vertebrates, Fossil, The illustration features detailed depictions of fossilized jaw bones, showcasing various perspectives and anatomical features. Each section is meticulously labeled with figures indicating different parts of the jaw, highlighting the intricate morphology of these specimens. The overall layout suggests a scientific study of vertebrate remains from the Tertiary period, emphasizing their significance in understanding evolutionary history. The precise detail and clarity of the drawings reflect the scholarly approach to paleontology during the time of its publication.