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23 hours ago · General research. Bomfleur et al. (2017) also provide an evolutionary (phylogenetic, non- cladistic) classification in line with PPG I for all rhizome fossils of king ferns (Osmundales), which recognizes and describes two families with two subfamilies each (3 extinct, 1 extant), 13 extinct and six extant genera from the late Permian to now; the ...
