Timeline

This timeline records the most impactful events of Ezta as well as the way in which time is categorised. The timeline starts at the most recent time and works backwards as it goes down.

(My refers to the millions of years since the start of the Atroxian e.g. 50my is 50 million years since the start of the Atroxian.)

## SCIOCONTIAN

(96my - Present)

**Stages**

Unnamed: 96my - Present (R.289 - Present)

**Events**

...

## OLIVERIAN

(50my - 96my)

**Stages**

Nocturnus: 50my - 60.6my (R.150 - R.181)

Astathean: 60.6my - 65.6my (R.182 - R.196)

Agentian: 65.6my - 70.3my (R.197 - R.210)

Atrobocean: 70.3my - 80.6my (R.211 - R.241)

Samudaran: 80.6my - 94.6my (R.242 - R.283)

Inviernian Stage: 94.6my - 96my (R.284 - R.288)

**Events**

96my (R.288): A second pulse of the End-Oliverian Extinction Event comes in the form of an anoxic ocean event caused by the nutrients released from glacier retreat. It brings the Oliverian to an end with the loss of 83% of marine life.

94.6my (R.284): The spread of glaciers as a result of the average global temperature falling to 12c causes the seas to fall to a critically low level and this, combined with the cold, begins the End-Oliverian Extinction Event.

84.3my (R.253): Kommos and Tartarus rejoin in the south. A part of Tartarus breaks off and joins Aeaea. Fauna is exchanged between these lands, leading to some extinctions.

82.6my (R.248): The planet cools to such a point that glaciers have formed over the southern tip of Kommos.

81.3my (R.244): A gamma ray burst hits the Northern Hemisphere of Ezta and causes a minor extinction event.

80.6my (R.242): The intensive volcanic activity halts which means less tectonic activity, less seafloor spreading and lower greenhouse gases. The temperate drops so that freezing oceans and climates return. The sea level has also dropped and some of the cast swathe ocean that covered the land is now trapped in isolated inland seas.

70.3my (R.211): Plants take their first proper steps onto land, slowly changing the atmosphere.

65my (R.195): A small asteroid smashes into central Tartarus causing only regional damage.

62.3my (R.187): The global temperature reaches 30c meaning it's temperate over the poles. It also means the Geralluiji links with the tropics of Uteenessa, leading to some extinctions.

61.3my (R.184): An incident of sweepstakes colonisation sees Cerceps cerceps migrate a population to the Northern Hemisphere from the Southern Hemisphere.

61my (R.183): Probably caused by the global warming, methane clathrate deposits in the sea were thawed and methane was released from the sea into the atmosphere in an 'oceanic burp.' This caused a brief spike in temperature.

60.6my (R.182): Increased tectonic activity caused by the continents breaking up, sees lots of carbon dioxide pumped into the atmosphere, causing the temperature to increase.

53my (R.159): An incident of sweepstakes colonisation sees Gempliaori secarus migrate a population to Olympia from Tartarus.

52.3my (R.157) - Seafloor spreading and tectonic activity slows back to a normal pace.

## ATROXIAN

(0my - 50my)

**Stages**

Medusan: 0my - 3.3my (R.0 - R.10)

Cartiligian: 3.3my - 6my (R.11 - R.18)

Tyrannidean: 6my - 13.3my (R.19 - R. 40)

Gnathian: 13.3my - 21.3my (R.41 - R.64)

Fressian: 21.3my - 29my (R.65 - R.87)

Cinisian: 29my - 32.7my (R.88 - R.98)

Novaglacian: 32.7my - 41.7my (R.99 - R.125)

Untrustolithic: 41.7my - 46my (R.126 - R.138)

Gammavian: 46my - 50my (R.139 - R.149)

**Events**

48.7my - 50my (R.146 - R.149): A flood basalt eruption in the southeastern Uteenessa causes an anoxic event that wipes out 41% of species.

46my (R.139): A gamma ray burst causes the Gammavian Extinction, ending a quarter of all species.

41.7my (R.126): Seafloor spreading along the Gaia Ocean ridge increases, and volcanic activity heats up the planet. There are no polar climates. Several species are forced into extinction.

29my - 32.7my (R.88 - R.98) The Cinisian Flood Basalt event plays havoc with the climate, leading to several extinctions. Eventually, it stops and the worst of the carbon dioxide is absorbed. Polar climates reappear.

19my (R.57): An outbreak of Jellyfishmon’s Disease decimates shallow sea populations.

18my (R.54) - 19my (R.57): The Gnathian Ice Age occurs.

10my (R.30): Tyrannidean Anoxic Event causes several extinctions.