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2009-10-22 09:37:19

The fossil remains of some of the first animals with shells, ocean-dwelling creatures that measure a few centimeters in length and date to about 520 million years ago, provide a window on evolution at this time.


Word of the Day
taphephobia
  • A morbid dread of being buried alive. Also spelled 'taphiphobia'.
The word 'taphephobia' comes from Greek roots meaning 'burial' and 'fear'.
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