What is "neoproterozoic"

The Neoproterozoic Era is the unit of geologic time from .

It is the last era of the Proterozoic Eon and Precambrian Supereon; it is subdivided into the Tonian, Cryogenian, and Ediacaran Periods. It is preceded by the Mesoproterozoic era and succeeded by the Paleozoic era.

The most severe glaciation known in the geologic record occurred during the Cryogenian, when ice sheets reached the equator and formed a possible " Snowball Earth".

The earliest fossils of multicellular life are found in the Ediacaran, including the earliest animals.

According to Rino and co-workers, the sum of the continental crust formed in the Pan-African orogeny and the Grenville orogeny makes the Neoproterozoic the period of Earth's history that has produced most continental crust.