Azolla primaeva

Azolla primaeva is an extinct species of `water fern` in the Azollaceae family known from Eocene fossils from the Ypresian stage ({Period span/brief|Ypresian}), found in southern British Columbia. The species was first described from poorly preserved material collected in the Similkameen River area near Princeton, British Columbia and later note.....
Found on http://en.wikipedia.org/wiki/Azolla_primaeva
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