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Cryogenian Reference Libraries

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Neoproterozoic
2012-11-18 19:10:56

The Neoproterozoic is the third of three subdivisions of the Proterozoic Eon (occurring from 1 billion years ago to 542 million years ago). This terminal era of the Proterozoic is itself divided into three sub-periods called the Tonian, Cryogenian, and Ediacaran Periods. The most severe glaciation known in the geologic record occurred during the Cryogenian Period, when ice sheets reached the...

Word of the Day
prosopography
  • a study of the individuals in a group of people within a specific context and their relationships.
  • In rhetoric, the description of any one's personal appearance.
The word 'prosopography' comes from a Latin word meaning 'description of a person’s appearance' from Greek roots meaning 'face' or 'person' and 'writing'.