Palaeontology and Palaeobotany
Paleontology is the main scientific branch, which study fossils and prehistoric times.


Paleozoology studies the fossils and biology of prehistoric animals.
Paleobotany studies fossils and biology of prehistoric plants.
Paleobiology studies the biology of prehistoric organisms.
Paleoecology studies the prehistoric ecological systems and ecology.


In fact, putting the prefix "paleo-" turns every scientific branch of biology to a branch concentrating on this subject but in prehistoric times.