(n.) The study of the ancient life of the earth, or of fossils which are the remains of such life\.

aerobiology agrobiology anatomy astrobiology bacteriology biochemics biochemistry biochemy bioecology biological science biology biometrics biometry bionics bionomics biophysics botany cell physiology cryobiology cybernetics cytology ecology electrobiology embryology enzymology ethnobiology exobiology genetics gnotobiotics life science microbiology molecular biology pharmacology physiology radiobiology taxonomy virology xenobiology zoology