A new fossil species of Polypodium (Polypodiaceae) from the Oligocene of northern Bohemia (Czech Republic)
A new fossil species of Polypodium (Polypodiaceae) from the Oligocene of northern Bohemia (Czech Republic)
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DOI：
10.1002/fedr.20011120302
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发表时间：
2001
影响因子：
--
通讯作者：
Z. Kvaček
中科院分区：
文献类型：
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作者：
Z. Kvaček
本文报道了一种新的化石龙骨属（Polypodium L.）修改。CHING（水龙骨科s.str.）在北波希米亚Ceske stredohori山脉（地点Bechlejovice，Holy Kluk山）的早渐新世页岩中发现。Radonii sp. nova的特征是在碎片复叶的基础上，它具有简单的羽状片层，整个羽状片层，游离的，溯河产卵的分支脉序，单生的宽椭圆形表面囊群和Polypodiisporites bock-witzensis类型的原位单裂缝孢子。这个地球（？附生或石生）蕨类植物与亚热带中生混合（Holy Kluk）和暖温带落叶阔叶（Bechlejovice）森林类型的植被有关。本文综述了水龙骨科的分类学研究现状，以及该蕨类类群在第三纪的记录。
A new fossil representative of Polypodium L. emend. CHING (Polypodiaceae s.str.) was recovered in the Early Oligocene diatomite shales of the Ceske stredohori Mountains, North Bohemia (localities Bechlejovice, Holy Kluk hill). Polypodium radonii sp. nova is characterised on the basis of fragmentary fronds, which have simple pinnatifid laminas, entire pinnae, free, anadromously branched venation, solitary broadly elliptic superficial sori and monolete spores in situ of the Polypodiisporites bock-witzensis type. This terrestrial (? to epiphytic or epilithic) fern was associated with vegetation of subtropical Mixed Mesophytic (Holy Kluk) and warm temperate Deciduous Broad-leaved (Bechlejovice) forest types. Actual taxonomy of extant Polypodiaceae s.str. as well as the Tertiary records of this fern group within the Holarctis are reviewed.