Fossil Polypodiaceae and their spores
Fossil Polypodiaceae and their spores
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作者：
Van Uffelen
在本出版物中，重点放在水螅科（Filicales）的现代定义上，该定义是基于对最近材料的广泛研究，并且与古植物学家通常应用的该科的较旧范围相比受到很大限制。严格意义上属于这个科的雌虫化石极为罕见，而那些被检查的化石上没有任何适合研究的孢子。在传统意义上属于大家族的化石中，只有一小部分属于严格意义上的大家族。作者对为数不多的水足类化石进行了调查，并列出了通常（有时是暂定地）被归入水足科的非水足类化石。
In this publication emphasis is laid on the modern definition of the family Polypodiaceae (Filicales), which is based on an extensive study of Recent material and which is much restricted with respect to older circumscriptions of the family as usually applied by palaeobotanists. Fossils of fems belonging to the family in the strict sense are extremely rare and those examined do not bear any spores suitable for study. Of the fossils attributed to the family in its traditional, large sense, only a small minority belongs to the family in its strict sense. A survey of the few polypodiaceous fossils known to the author is given together with a list of non-polypodiaceous fossils that usually (sometimes tentatively) have been referred to the family Polypodiaceae.