Theories of origin of life and their creators or supporter (i) Theory of Special Creation The greatest supporter of this theory was father Suarez (ii) Theory of Spontaneus Creation This concept was held by early Greek philosophers like Thales, Plato, Aristotle (iii) Cosmozoic Theory of Theory of Panspermia This theory was proposed by Richter (1865) (iv) Theory of Eternity of Life This theory was proposed by Preyer in 1880 (v) Theory of Catatrophism This theory given by Georges Cuvier (1769-1832) (vi) Modern Theory Oparin (1938) and Haldane (1929) gave similar views regarding the origin of life called chemical or naturalistic theory