
In the geologic timescale, the Anisian is the lower stage or earliest age of the Middle Triassic series or epoch and lasted from {Geologic Ages Inline|Anisian} million years ago until {Geologic Ages Inline|Ladinian} million years ago. The Anisian age succeeds the Olenekian age (part of the Lower Triassic epoch) and precedes the Ladinian age. ==Str...
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http://en.wikipedia.org/wiki/Anisian

The lower stage of the M. Triassic, 241.1 - 239.5 Ma
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https://www.encyclo.co.uk/local/20501
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