Oldest fossils of lund animals consists of

Oldest fossils of land animals consists of

The oldest fossil of modern horse is known as

The oldest fossil of modern horse is known as

The oldest fossiles found so far date back to the

Select the set of animals which consists exclusively of animals showing dual secretion (ammonotelic as well as ureotelic).

Study of animal fossils are

Study of animal fossils are

Fossils of oldest land animals date back to