\[ **BT: [[Earth#the Earth’s history]]** ] --- # geologic time ==Note: listed from older (further away from the current day) to younger (closer to the current day).== --- ## Precambrian A time period from 4567 to 538.8 million years ago.[^1] ### Hadean ### Archean ### Proterozoic --- ## Phanerozoic A time period from 538.8 to 0 million years ago.[^2] ### Palaeozoic A time period from 538.8 to 251.902 million years ago.[^3] #### Cambrian #### Ordovician #### Silurian #### Devonian A time period from 419.62 to 358.86 million years ago.[^4] [[Prototaxites were ‘living spires … scattered across the landscape’ 400 million years ago. Some were taller than a two-storey building, and were around for at least 40 million years. They are thought to have been enormous fungi.]][^5] - see also: [[fungi]] #### Carboniferous #### Permian ### Mesozoic A time period from 251.902 to 66.00 million years ago.[^6] #### Triassic [[Morganucodon]] first appeared during the Late Triassic.[^7] #### Jurassic [[Morganucodon]] likely lived until the Middle Jurassic.[^8] #### Cretaceous ### Cenozoic A time period from 66.00 to 0 million years ago.[^9] #### Palaeogene #### Neogene A time period from 23.04 to 2.58 million years ago.[^10] ##### Miocene ##### Pliocene - see: [[Pliocene]] - [[Pleistocene#Last Glacial Period|Last Glacial Period]] - [[Laschamps excursion]] #### Quaternary A time period from 2.58 to 0 million years ago.[^11] ##### Pleistocene - see: [[Pleistocene]] ##### Holocene - see: [[Holocene]] --- [^1]: International Commission on Stratigraphy, ‘[[ICS, ‘International Chronostratigraphic Chart’, 2024|International Chronostratigraphic Chart]]’, International Commission on Stratigraphy, December 2024, [https://stratigraphy.org/chart/](https://stratigraphy.org/chart/). [^2]: International Commission on Stratigraphy, ‘[[ICS, ‘International Chronostratigraphic Chart’, 2024|International Chronostratigraphic Chart]]’, International Commission on Stratigraphy, December 2024, [https://stratigraphy.org/chart/](https://stratigraphy.org/chart/). [^3]: International Commission on Stratigraphy, ‘[[ICS, ‘International Chronostratigraphic Chart’, 2024|International Chronostratigraphic Chart]]’, International Commission on Stratigraphy, December 2024, [https://stratigraphy.org/chart/](https://stratigraphy.org/chart/).International Commission on Stratigraphy, ‘[[ICS, ‘International Chronostratigraphic Chart’, 2024|International Chronostratigraphic Chart]]’, International Commission on Stratigraphy, December 2024, [https://stratigraphy.org/chart/](https://stratigraphy.org/chart/). [^4]: International Commission on Stratigraphy, ‘[[ICS, ‘International Chronostratigraphic Chart’, 2024|International Chronostratigraphic Chart]]’, International Commission on Stratigraphy, December 2024, [https://stratigraphy.org/chart/](https://stratigraphy.org/chart/) [^5]: Merlin Sheldrake, *[[Sheldrake, Entangled Life, 2021|Entangled Life: How Fungi Make Our Worlds, Change Our Minds, and Shape Our Futures]]* (Vintage, 2021), p. 4. [^6]: International Commission on Stratigraphy, ‘[[ICS, ‘International Chronostratigraphic Chart’, 2024|International Chronostratigraphic Chart]]’, International Commission on Stratigraphy, December 2024, [https://stratigraphy.org/chart/](https://stratigraphy.org/chart/). [^7]: ‘Morganucodon’, Wikipedia, last edited 3 September 2025, 21:18 (UTC), https://en.wikipedia.org/wiki/Morganucodon. [^8]: ‘Morganucodon’, Wikipedia, last edited 3 September 2025, 21:18 (UTC), https://en.wikipedia.org/wiki/Morganucodon. [^9]: International Commission on Stratigraphy, ‘[[ICS, ‘International Chronostratigraphic Chart’, 2024|International Chronostratigraphic Chart]]’, International Commission on Stratigraphy, December 2024, [https://stratigraphy.org/chart/](https://stratigraphy.org/chart/). [^10]: International Commission on Stratigraphy, ‘[[ICS, ‘International Chronostratigraphic Chart’, 2024|International Chronostratigraphic Chart]]’, International Commission on Stratigraphy, December 2024, [https://stratigraphy.org/chart/](https://stratigraphy.org/chart/). [^11]: International Commission on Stratigraphy, ‘[[ICS, ‘International Chronostratigraphic Chart’, 2024|International Chronostratigraphic Chart]]’, International Commission on Stratigraphy, December 2024, [https://stratigraphy.org/chart/](https://stratigraphy.org/chart/).