Template:Potd/2011-03-04 (en)
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This is the English translation of the Picture of the day description page from 4 March 2011.
Spiriferina rostrata (Brachiopod). Brachiopods filtered plankton, using a specialized organ: the lophophore. It is exceptional to be able to find silicified skeleton of this organ, visible in this specimen.
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