Indian, Tertiary, and post Tertiary Vertebrata. Calcutta, Geological Survey Office, 1874-1902. India, paleontology, vertebrates, fossil, The depiction shows a detailed illustration of the fossilized remains of a prehistoric vertebrate from the Tertiary period. The image presents both dorsal and ventral views of the specimen, highlighting its distinctive anatomical features. Labels and annotations indicate specific parts of the fossil, suggesting a focus on its morphological characteristics and classifications within paleontological studies. This illustration is likely part of a scientific publication, contributing to the understanding of vertebrate evolution during the Tertiary era.