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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
coulisse
  • One of the side scenes of the stage in a theater, or the space included between the side scenes.
  • The outside stock exchange, or “curb market,” of Paris.
  • A flute or groove on the blade of a sword.
  • A section of stage scenery placed in a wing of a theatre.
The word 'coulisse' comes from a French word meaning "sliding door".
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