An extinct plant order from the Paleozoic Era with characteristics intermediate between cycads and ferns.
From 'cycado-' (cycad) plus 'filicale' (fern order), combining terms for two plant groups to name organisms that showed hybrid evolutionary features.
Cycadofilicales were evolutionary bridges—they proved that cycads and ferns shared a common ancestor by displaying features of both groups, solving one of paleobotany's greatest puzzles!
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