Kingdom Plantae Class Cycadopsida Rank Genus | Division Cycadophyta Family Cyclopteridaceae Order Medullosales | |
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Similar Alethopteris, Pecopteris, Annularia, Neuropteris, Sphenopteris | ||
Callipteridium is an extinct genus of pteridospermous seed ferns belonging to the family Cyclopteridaceae. These ferns existed in the Carboniferous period.
References
Callipteridium Wikipedia(Text) CC BY-SA