蕨类植物图集根节点保留 3.85 亿年前至今的导航包络，以中泥盆世 Wattieza–Eospermatopteris 枝蕨类复原为锚点；蕨状体型不等于冠群真蕨、冠群木贼或直系祖先主张。
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参考文献 / paperGiant cladoxylopsid trees resolve the enigma of the Earth's earliest forest stumps at Gilboa
Stein, W.E.; Mannolini, F.; Hernick, L.V.; Landing, E.; Berry, C.M.
年份2007
来源角色primary-study
DOI / ID10.1038/nature05705
适用范围
taxonomy · range · 形态
Middle Devonian Wattieza crown material attached to Eospermatopteris trunks reconstructs a cladoxylopsid tree; the fern-like body plan is not evidence of crown-fern or horsetail ancestry.