Alethopteris definitions

Alethopteris

Alethopteris is a genus of fossil seed ferns that existed in the Carboniferous period (around {period span/brief|Carboniferous|-1}). ...
Found on http://en.wikipedia.org/wiki/Alethopteris

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Alethopteris

Alethopteris A genus of fossil ferns, found especially in coal formations [literally, having 'true ferns'].
Found on http://www.wordinfo.info/words/index/info/view_unit/73/

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