pecopteris

Noun
  1. Carboniferous fossil fern characterized by a regular arrangement of the leaflets resembling a comb (synset 111565801)
    is a type of: fern - any of numerous flowerless and seedless vascular plants having true roots from a rhizome and fronds that uncurl upward; reproduce by spores
    belongs to: genus pecopteris - genus of Carboniferous fossil ferns

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