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|Noun||1.||genus Pecopteris - genus of Carboniferous fossil ferns|
division Pteridophyta, Pteridophyta - containing all the vascular plants that do not bear seeds: ferns, horsetails, club mosses, and whisk ferns; in some classifications considered a subdivision of Tracheophyta
pecopteris - Carboniferous fossil fern characterized by a regular arrangement of the leaflets resembling a comb
fern genus - genera of ferns and fern allies