Indian Tertiary and post-Tertiary Vertebrata, Calcutta, Geological Survey Office, 1874-1902, India, paleontology, vertebrates, fossil, This detailed illustration showcases the anatomical features of various vertebrate fossils from the Tertiary period. The image is divided into multiple sections, each highlighting a distinct specimen. These specimens display intricate textures and patterns, revealing the complexity of their surfaces. Notable characteristics include a variety of shapes, with some featuring pronounced ridges and grooves, while others exhibit smoother outlines. This representation emphasizes the diversity of forms found in ancient vertebrate remains, providing insights into their evolutionary history and morphological adaptations.