Terraemortus

Terraemortus refers to an extinction event caused by a shift in tectonic plates that began on January 11th, 2019. At this time Zone C split from Zone E, resulting in a river running between them. It was also at this time that Zone P appeared, although it was not labeled until February 26th, 2019.

For a number reasons, including (but not limited to) the split, numerous species went extinct 10 days later, on February 21st, 2019.

Terraemortus marks the end of the Oslontocene period.

Announcement

The original announcement of the event, as made by Cheeto, is reproduced below.

GEOLOGICAL EVENT #1
Due to a recent shift in tectonic plates, A new canal has opened up at the edge of zones C and E, connecting zones 9 and 4. This has also caused an alteration in the East coastline of zone C. Furthermore, a very small channel has formed that connects zone 23 to the new zone 9 channel. The lake remains freshwater, while the canal is brackish, and the channel remains saltwater. The largest change that this tectonic plate shift has done is allowed a shallow section of zone 4 to rise out of the water and form a tropical island with a salt water river running through the middle. The north end of the island is hilly, and the south is much flatter. The island is classified as part of zone 4. 
See #map for the new, updated map
Species Changes
O. angelosis, R. electra, T. extensiensus, P. duraspinus, M. bitentaculum, and T. pilosa have spread to Zone 4.
M. bitentaculum and C. armous would compete
P. duraspinus would probably be predated by N. spinoyonxii. Which would put it in danger of extinction because it is cannibalistic
(these species changes will be placed in #arguments for further discussion)
@everyone

Extinctions

A total of 13 species went extinct during this event, including some Genesis species.

Species	Reason
Sukalensis cambilli	it is unsustainable due to its much larger size and predation pressure from Macrognathusensis
Testudius cliasi	predation pressure from T. testudius and is out-competed by Suboslontus spp. for food
Testudius testudius	T. cliasi was its only viable food source
Helix quattuorus	outcompeted by Helix cirucmferus due to H. circumferus' ability to store nutrients and mass during times of low food
Macrobrachium crimsonsoni	it is poorly adapted to predators and would get wiped out by Varanusuchus prionopisces
Codosiga coniunctavita	M. crimsonsoni is its host
Capsis armous	outcompeted by M. bitentaculum and S. filterous
Protochthyus duraspinus	its numbers would drop too low from their cannibalistic nature and introduction of N. dentesos as a predator
Macrobrachium algaeaterensis	outcompeted by M. herbibiria and from predation pressure from Macrognathusensis tanganyikano and Metatestudius universaoculusii
Macrongathusensis tanganyikano	M. algaeaterensis is their only food source
Saldrapus intentius	it is outcompeted by Ambuladentus squidyensis and predation pressure from Spinomandrus rostrodontus
Varanusuchus spinacaliditas	predation pressure from Pseudosukalensis species and loss of a Sukalensis maputensis as a food source
Helix bullous	outcompeted by H. pessulus on land and H. circumferus in the water

Additionally, 3 species went extinct in some of their respective zones, without going completely extinct.

Species	Reason
Odontotria laspimorphus	extinct in Zone 12 because of the loss of H. bullous but would reamin on O. pessulus in Zone F
Suboslontus squidyensis	extinct in Zone 5 because it lacks a food source as it is exclusive on Odonototria species
Metatestudius herbibiria	extinct in Zone 9 because it only eats algae and there are no algae present

3 more species were initially pending extinction, but were able to survive in the end, with surviving populations found on February 22nd, 2019.

Species	Reason	Reason excluded
Draco arbora	outcompeted by S. spikus and can no longer reach its food
Aquaplortatus tastyensis	it is outcompeted by A. lagosus and A. stepiensis	they are specialized for certain areas(high salty but brackish waters and areas with loose soil) so tastyensis would still be able to inhabit any places in between
Pseudosukalensis tridentus	outcompeted by P. ambushus and from the loss of Varanusuchus spinacaliditas as a food source	migrate to Zone H, feeding on the seeds from the three Plortatus sp. There and hunting V. coxaeiuncturam. (Weather is similar)

Aftermath

The shift in tectonic plates opened up a canal running between Zone C and Zone E, connecting Zone 4 and Zone 9. Additionally, a small channel formed that connects the canal to the freshwater lake of Zone 23. The lake remained freshwater, with the canal being saltwater and the channel brackish.

The eastern coastline of Zone C changed shape, becoming less straight. At the same time, a shallow section of Zone 4 rose out of the water giving rise to a new land mass that later came to be known as Zone P, a tropical island with hills in the north and flatland to the south.

Pre-Terraemortus map
Post-Terraemortus map