Study of fossils is known as

A

Palaeobotany

B

Palaeontology

C

Anatomy

D

Ornithology

Paleontology is the study of the history of life on Earth as based on fossils. Fossils are the remains of plants, animals, fungi, bacteria, and single-celled living things that have been replaced by rock material or impressions of organisms preserved in rock
Hence Study of fossils is known as Paleontology.
So, the correct answer is 'Paleontology'.