Timeline of Natural History

This is a timeline of the Earth, focusing on geology and evolution. Almost all data comes from Wikipedia's Timeline Of Natural History.

Most of the descriptions of of the events on this timeline are taken directly from the Wikipedia article about the event itself. Where possible, I've included links back to the article that verifies the event happened when the timeline places it. In some cases, however, I was unable to verify the date of the event, and in these cases I've provided a link to the Wikipedia article that seemed most relevant.;xNLx;;xNLx;For example, I was unable to verify the claim that the first possible comb-jellies, sponges, corals, and anemones appear in the fossil record at 550 million years ago. This entry on the timeline links instead to the individual Wikipedia articles about these specific creatures.;xNLx;;xNLx;In some rare cases where the Wikipedia information seemed incomplete, I have provided a link to the outside sources the Wikipedia articles reference.;xNLx;;xNLx;If you find errors or omissions, feel free to contact me and I'll do my best to correct them.;xNLx;;xNLx;If I'm using an image that is copywritten, ;xSTx;em;xETx;please;xSTx;/em;xETx; let me know which event it's used in so I can find a replacement for it.;xNLx;;xSTx;br;xETx;;xNLx;;xNLx;Sincerely,;xNLx;Gabriel Stevens;xNLx;;xSTx;a href="mailto:gabriel@ink-smudge.com?subject=Timeline of Natural History";xETx;[Email Me];xSTx;/a;xETx;

1000000000 BC-04-19 00:32:29

Tonian Period

The first geologic period in the Neoproterozoic Era.

1000000000 BC-04-19 09:50:16

Neoproterozoic Era

The terminal Era of the formal Proterozoic Eon (or the informal "Precambrian"), it is further subdivided into the Tonian, Cryogenian, and Ediacaran Periods.

1100000000 BC-04-19 00:17:10

Supercontinent Rodinia

Rodinia is a supercontinent which contained most or all of Earth's landmass.

1100000000 BC-04-19 00:20:56

First Dinoflagellates

The dinoflagellates are a large group of flagellate protists. Most are marine plankton, but they are common in fresh water habitats as well.

1200000000 BC-04-19 00:10:55

Stenian Period

The final geologic period in the Mesoproterozoic Era.

1250000000 BC-04-19 00:02:18

Grenville Orogeny

The Grenville Orogeny was a long-lived Mesoproterozoic mountain-building event associated with the assembly of the supercontinent Rodinia.

13200000000 BC-04-18 18:21:17

Birth Of Galaxies

The first galaxies came together about 500 million years after the first stars formed.

13200000000 BC-04-20 09:33:12

Second Oldest Known Star

Birth of the second oldest known star, HE 1523-0901.

13450000000 BC-04-20 10:32:07

Oldest Known Star

HD 140283 is a metal-poor subgiant star about 190.1 light years away from the Earth.

13600000000 BC-04-20 10:18:13

Earliest Stars Form

The first stars began to shine about 13.6 billion years ago.

13770000000 BC-04-21 10:20:12

The Big Bang

The formation of the universe according to the Big Bang theory.

1400000000 BC-04-18 23:54:49

Ectasian Period

The second geologic period in the Mesoproterozoic Era.

1500000000 BC-04-18 23:40:49

Complex Eukaryotes

First structurally complex eukaryotes.

1600000000 BC-04-18 21:05:30

Calymmian Period

The first geologic period in the Mesoproterozoic Era.

1600000000 BC-04-19 00:12:53

Mesoproterozoic Era

The Mesoproterozoic was the first period of Earth's history of which a respectable geological record survives.

1800000000 BC-04-18 20:46:05

Statherian Period

The final geologic period in the Paleoproterozoic Era.

1800000000 BC-04-18 20:51:53

Supercontinent Columbia

Columbia, also known as Nuna and Hudsonland, was one of Earth's ancient supercontinents.

1800000000 BC-04-18 20:55:37

Oldest Ergs Form

Oldest ergs develop on several cratons.

1850000000 BC-04-18 20:40:35

Sudbury Impact

Sudbury impact structure formed.

2000000000 BC-04-18 20:36:36

Uranium-Precipitant Bacteria

The Oklo natural nuclear reactor of Gabon produced by uranium-precipitant bacteria.

2000000000 BC-04-18 20:37:26

Acritarch Fossils

First acritarchs evolved.

2023000000 BC-04-18 20:25:47

Vredefort Impact

Vredefort impact structure forms.

2050000000 BC-04-18 19:39:21

Orosirian Period

The third geologic period in the Paleoproterozoic Era.

2200000000 BC-04-18 19:32:07

Kem Kem Beds Formed

Continental Red Beds found, produced by iron in weathered sandstone being exposed to oxygen.

2200000000 BC-04-18 19:35:49

Eukaryote Fossils

Earliest known eukaryote fossils found. Earliest multicellular organisms (Francevillian Group Fossil).

2300000000 BC-04-18 19:39:36

Rhyacian Period

The second geologic period in the Paleoproterozoic Era.

2400000000 BC-04-18 12:24:31

Great Oxygenation Event

Earth's atmosphere starts to become oxygenic.

2400000000 BC-04-18 18:07:59

Huronian Glaciation

Huronian glaciation was probably caused from oxidation of earlier methane greenhouse gas produced by burial of organic sediments of photosynthesizers.

2500000000 BC-04-18 12:07:00

Proterozoic Eon

A geological eon representing the time just before the proliferation of complex life on Earth.

2500000000 BC-04-18 12:08:45

Paleoproterozoic Era

This is when the continents first stabilized. This is also when cyanobacteria evolved, a type of bacteria which uses the biochemical process of photosynthesis to produce energy and oxygen.

2500000000 BC-04-18 12:19:12

Siderian Period

The first geologic period in the Paleoproterozoic Era.

2500000000 BC-04-18 12:21:09

Banded Iron Formations

Banded iron formations form.

2500000000 BC-04-18 16:00:47

Assembly of Arctica

Assembly of Arctica out of the Canadian Laurentian Shield and Siberian craton.

2600000000 BC-04-18 15:43:01

First Carbonate Platform

Oldest known giant carbonate platform, a sedimentary body which possesses topographic relief.

2700000000 BC-04-18 15:39:36

Oxygenic Photosynthesis

Biomarkers of cyanobacteria and other early life-forms based on oxygenic photosynthesis discovered.

2736000000 BC-04-18 15:28:58

Greenstone Belt Formation

Formation of the Temagami greenstone belt which will eventually reside in Temagami, Ontario, Canada.

2800000000 BC-04-18 15:25:07

Neoarchaean Era

A geologic era within the Archaean.

2900000000 BC-04-18 15:22:14

Supercontinent Kenorland

Kenorland was one of the earliest supercontinents on Earth.

3200000000 BC-04-18 15:13:30

Mesoarchaean Era

A geologic era within the Archean.

3200000000 BC-04-18 15:16:41

Supercontinent Ur

Assembly of the Ur supercontinent to cover between 12–16% of the current continental crust.

3300000000 BC-04-18 15:09:55

Compressional Tectonics

Onset of compressional tectonics, the shortening and thickening of sections of the Earth's crust.

3460000000 BC-04-18 14:56:54

Bacteria Evolves

Fossils of bacteria have been found in chert, a fine-grained, sedimentary rock.

3500000000 BC-04-18 14:36:38

Cyanobacteria-like Life

Fossils resembling cyanobacteria, found at Warrawoona, Western Australia.

3600000000 BC-04-18 14:28:14

Supercontinent Vaalbara

Vaalbara is theorized to be Earth's first supercontinent. The name Vaalbara is derived from the South African Kaapvaal craton and the West Australian Pilbara craton. These cratons were combined during the time of the Vaalbara supercontinent.

3600000000 BC-04-18 14:32:40

Paleoarchaean Era

A geologic era within the Archaean.

3800000000 BC-04-18 14:24:49

Banded Iron Formations

Oldest banded iron formations found. Significant because iron rust requires oxygen.

3850000000 BC-04-18 14:16:04

Evidence of Photosynthesis

Greenland apatite shows evidence of 12C enrichment, characteristic of the presence of photosynthetic life.

4000000000 BC-04-18 13:57:30

Archean Eon

This eon began with the planet beginning to look as it does today, with continents of solid land and oceans of liquid water.

4000000000 BC-04-18 14:09:16

Eoarchaean Era

The Eoarchean Era is the earliest time following the solidification of Earth's crust.

4100000000 BC-04-18 18:40:19

Late Heavy Bombardment

Late heavy bombardment of the Moon (and probably of the Earth as well) by bolides and asteroids.

Timeline of Natural History

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