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physical phenomena > event > era > geological era > precambrian era > middle precambrian period
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middle precambrian period
subjectfact 
middle precambrian periodhas duration million years2001-09-27 09:30:00.0
has start time million years ago2001-09-27 09:30:00.0
is a kind of precambrian era2001-09-27 09:30:00.0
eventhas synonym world point2001-09-27 09:29:57.0
has time of occurrence2001-09-27 09:29:57.0