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noun
Primitive plants of the Paleozoic.
synonym: Rhyniaceae.
is a specific kind of: fern family.
has as a member: genus Rhynia, Rhynia | genus Horneophyton, Horneophyton.
is a member of: order Psilophytales, Psilophytales.
Find more on family rhyniaceae elsewhere: etymology - rhymes - Wikipedia.
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