Study of fossils is known as
Paleontology
The correct option is D:
Explanation for the correct option:
Explanation for the incorrect options:
Option A:
Palaeobotany is the study of fossils of algae, plants and fungi.
Option B:
Anatomy is the study of organisms' internal bodies.
Option C:
Ornithology is the study of birds.
Final answer: Study of fossils is known as paleontology.