The ENTIRE HISTORY of EVERYTHING

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Presentation transcript:

The ENTIRE HISTORY of EVERYTHING (Abridged)

Major Events: Formation of universe. About 10 - 16 BYBP Formation of the Earth. About 4 - 6 BYBP Appearance of simple cells. About 3.5 - 4 BYBP (including cyanobacteria) Appearance of complex cells, including eukaryotic algae. About 1 - 3 BYBP Appearance of sex. About 1 - 3 BYBP

Major Events Appearance of multicellular life including colonial Eukaryotic algae. About 1BYBP Cambrian explosion. About 500 MYBP (= 0.5 BYBP) First land plants. (Simple mosses and relatives) About 450 MYBP First ferns and relatives About 380 MYBP First conifers About 350 MYBP Major extinction, end of Permian About 350 MYBP

Major Events First Angiosperms About 200 MYBP Major extinction, end of Mesozoic About 60 MYBP Appearance of Homo Sapiens. < 1 MYBP Classes start, summer quarter, 2nd term July 26th 2004 See also here (timeline graphic).

Atmosphere and Continents: At first: Hydrogen, (H2), Helium (He) N2 Methane (CH4) Ammonia (NH3). No oxygen. Later organic compounds, then as life began to diversify, oxygen. Produced at first by photosynthetic cyanobacteria. Free oxygen was toxic to many species of early bacteria, this may have encouraged endosymbiosis. The theory of plate tectonics has allowed scientists to reconstruct patterns of continental drift.

Ohio Geology Good record of Paleozoic and Ice age (Cenozoic) Poor record of Mesozoic (unconformity) Paleozoic sediments exposed with age increasing East > West. Presence of up to 100 discernable cyclothems. The oceans come in, the oceans go out. The mountains go up, the mountains come down. Animals and plants live, animals and plants die. Repeat.