Indian Tertiary and post-Tertiary Vertebrata, Calcutta, Geological Survey Office, 1874-1902, India, paleontology, vertebrates, fossil, This illustration depicts a series of fossilized vertebrate teeth from the Tertiary period. The arrangement includes multiple views of various teeth, emphasizing their distinctive shapes and sizes. Each tooth is labeled with a number for identification, showcasing different morphological features that provide insights into the dietary habits and evolutionary adaptations of the species. The details captured highlight the unique characteristics of the dental structures, which are critical for paleontological studies in understanding the fauna of that era. The background remains neutral to focus attention on the intricacies of the teeth.