Evolution Theories

Creationism

1450 BCE

This theory consists of god creating the whole universe, living beings, the oceans, from basically out of nothing.
This theory started out in the bible, on Genesis 1:3 "Let there be light".
This ideology somehow didn't allow societies question the existence of things as the concrete answer they had for everything was "God created that, don't question why or how".

Spontaneous Generation

146 BCE

Greeks thought that from one "material" thing a living being would just appear out of nowhere as a consequence, and example of this would be a dead dog, Greeks thought that if the dead body stayed like that for a couple of days maggots would just magically appear out of nowhere.
This led to people being kind of ignorant when it came to using reason with things, but a good thing that came out from this is that they started questioning themselves things.

Lamarkism

Nov 22, 1809

Also known as zoologic philosophy was made Lamarck.
This theory plants out that animals/living beings did evolve in time, but from simpler species, say a sponge evolves into a fungi after a load of years. This theory helped us to understand how time and our environment affects our evolution

Darwinism

May 24, 1859

This theory was proposed by Darwin.
Darwin published an article called "On The Origin of Species" which talked about the "Natural Selection" which consists of giving the hypothesis that the strongest survive, which will help further evolution as these genes will be transffered to future generations. This helped the further understanding of the principles of evolution.

Biogenesis

Sep 6, 1864

Idea concluded by Louis Pasteur.
It goes saying that living creatures must emerge from life or that "living things come only from other living things". It calls out that modern life just didn't randomly appeared (contradicting the spontaneous generation theory).
This theory helped us "humans" to find out what comes from what, it developed our senses and we were able to find out about atoms, cells and all the other blocks of life.

Panspermia

Apr 20, 1908

Idea presented by Hermann Richter.
This theory talks about the possibility of some kind of "space" object or "space" race falling into our planet and basically creating life, even though this theory is really "acceptable" there has been no evidence on how this could be real. This helped us thinking on our surroundings, getting our curiosity to reach out into the space and afterwards getting to know our surroundings.

Endosymbiotic

Nov 19, 1910

This Theory was planted by a Russian botanist called Konstantin Mereschowsky.
It talks about the evolution of eukaryote prokaryote organisms first he studied the mitochondria (the powerhouse of the cell), he then also studied the structure of plant cells and its chloroplasts. He then later discovered the way on how the cells evolve and stuff... This really helped us out on discovering how our evolution works and how cells get their energy.

Physical Chemical

Apr 13, 1928

CONCLUSION

Sep 6, 2016

Well, not all of these theories were correct at all, but thanks to all of these "ideas" we've slowly managed to question ourselves even more and finding more concrete answers. Thanks to these theories we've come a long way, we've applied what we've learned from these experiments and applied them to medicine, technology, and a biology. I would say we wouldn't have a lot of things we do have at the moment (like medicines and stuff).