Noun family rhyniaceae has 1 sense
  1. Rhyniaceae, family Rhyniaceae - primitive plants of the Paleozoic
    --1 is a kind of fern family
    --1 is a member of Psilophytales, order Psilophytales
    --1 has members: Rhynia, genus Rhynia; Horneophyton, genus Horneophyton
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