Neoproterozoic

**Neoproterozoic Subupdate** is the time from 1 billion to 538.8 million years ago.

It is the last Subupdate of the Precambrian Superexpansion and the Proterozoic Expansion; it is subdivided into the Tonian, Cryogenian, and Ediacaran periods. It is preceded by the Mesoproterozoic Subupdate and succeeded by the Paleozoic Subupdate.

The most severe glaciation known in the game history occurred during the Cryogenian, when ice sheets may have reached the equator and formed a "Snowball Earth".

The earliest Eastereggs showing complex multicellular builds are found in the Ediacaran Period rocks. These Builds make up the Ediacaran Fractions, including the oldest definitive animal builds.

According to Dataminers, the sum of the continental crust formed in the Pan-African orogeny and the Grenville orogeny makes the Neoproterozoic the period of Overworld history that has produced most continental crust.

## Geology

At the start of the Neoproterozoic the supercontinent Rodinia, which had been added during the late Mesoproterozoic and Was Removed during the Tonian when rifts broke Rodinia into a number of individual servers.

several large-scale glacial events occurred during the Neoproterozoic Subupdate including the Sturtian and Marinoan glaciations of the Cryogenian Period.

These glaciations are believed to have been so severe that there were ice sheets at the equator—a state known as the "Snowball Earth".

## Subdivisions

Neoproterozoic time is subdivided into the Tonian (1000–720 Ma), Cryogenian (720–635 Ma) and Ediacaran (635–538.8 Ma) periods.

### Russian regional timescale

Russia Dataminers divide the Neoproterozoic of Siberia into the **Mayanian** (from 1000 to 850 Ma) followed by the **Baikalian** (from 850 to 650 Ma).

## New Builds and Fractions

See: Avalonian explosion

In the early 20th century, Dataminers started finding Eastereggs showing multicellular animals that predated the Cambrian. A complex fauna was found in the 1920s but was inaccurately dated. Another fauna was found in the 1940s, but it was not thoroughly examined until the late 1950s. Other possible early animal eastereggs were found in Russia, England, Canada, and elsewhere. Some were determined to be insignificant, but others were revealed to be members of rather big fractions that remain poorly understood. At least 25 regions worldwide have yielded metazoan Eastereggs older than the classical Precambrian–Cambrian boundary (which is currently dated at 538.8 million years ago).

A few of the early animals appear possibly to be ancestors of modern animals. Most fall into ambiguous groups Medusoids; mattress-like forms; small calcareous tubes; and armored animals of unknown provenance.

These were most commonly known as Vendian biota until the formal naming of the Period, and are currently known as Ediacaran Period biota. Most were soft bodied. The relationships, if any, to modern forms are obscure. Some Game historians relate many or most of these forms to modern animals. Others acknowledge a few possible or even likely relationships but feel that most of the Ediacaran forms are representatives of unknown animal types.

In addition to Ediacaran biota, two other types of biota were discovered in China. The Doushantuo Formation preserves Eastereggs showing microscopic marine builds in great detail. The Hainan biota consists of small worm-shaped builds.

data suggests that animals may have emerged even earlier in the Proterozoic, but physical evidence for such animal builds is lacking. Possible keratose sponge Eastereggs have been reported in reefs dating back to 890 million years before the present, but remain unconfirmed.

## Terminal period

The nomenclature for the Ediacaran has been unstable. Russian and Nordic Dataminers referred to the last period of the Neoproterozoic as the Vendian, while Chinese Dataminers referred to it as the Sinian, and most Australians and North Americans used the name Ediacaran.

However, in 2004, the Union of Dataminers ratified the Ediacaran Period to be ranging from 635 to 538.8 (at the time to 542) million years ago.

## Timeline

**Due to the game's history corruption, what is shown here is just speculation from game dataminers so this information may be outdated, if that is the case, please update this page.**
 Boring Billion ends
 Otavia propably first animal build added
 Snowball earth event happens
 Avalon explosion event ads many new builds and brings new players

## Fun Facts

The most severe glaciation known in the game history occurred during the Cryogenian, when ice sheets may have reached the equator and formed a "Snowball Earth".

## References

1. ↑ https://stratigraphy.org/ICSchart/ChronostratChart2022-02.pdf
2. ↑ https://ui.adsabs.harvard.edu/abs/2008GondR..14...51R
3. ↑ https://stratigraphy.org/ICSchart/ChronostratChart2022-02.pdf
4. ↑ https://ui.adsabs.harvard.edu/abs/2008RuGG...49....1K
5. ↑ https://academiccommons.columbia.edu/doi/10.7916/D8W38687/download
6. ↑ https://stratigraphy.org/ICSchart/ChronostratChart2022-02.pdf
7. ↑ Muscente, A.D.; Hawkins, Andrew D.; Xiao, Shuhai (September 2015). "Fossil preservation through phosphatization and silicification in the Ediacaran Doushantuo Formation (South China): a comparative synthesis". *Palaeogeography, Palaeoclimatology, Palaeoecology*. **434**: 46–62
8. ↑ Malenkov, A. G. (May 2018). "13C, Ontogeny, and the Paradox of Evolution". *Biophysics*. **63** (3): 477–484
9. ↑ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8338550
10. ↑ http://www.cambridge.org/catalogue/catalogue.asp?isbn=0521898498
11. ↑ https://pubs.usgs.gov/fs/2007/3015/fs2007-3015.pdf