A relatively neglected element of the biota of the Lower Devonian Rhynie chert Lagerstätte are filamentous green algae exceptionally preserved by silicification. Palynological processing of sediments associated with the cherts has yielded palynomorphs that we also interpret as the remains of filamentous green algae and one such taxon is described herein. Cells occur individually, in masses or joined end-to-end as an unbranched filament. The cells are characterised by end walls that form a ‘collar’ structure and inner bodies interpreted as reproductive structures. Because of a lack of preserved characters taxonomic precision is limited, although we suggest the fossils are most likely either zygnematalean or oedogonialean algae that inhabited ponds or lakes and were either attached to substrates and/or free-floating.

中文翻译：

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泥盆纪早期Rhynie cher石的丝状绿藻

下泥盆纪Rhynie chertLagerstätte的生物区系中一个相对被忽视的元素是丝状绿藻，它们通过硅化作用得以异常保存。对与ts石有关的沉积物进行孢粉学处理后，产生了类孢粉，我们也将其解释为丝状绿藻的残留物，本文中将描述一种这样的分类单元。细胞单独出现，成团出现或端到端连接成无分支的细丝。这些细胞的特征是端壁形成“衣领”结构，内部物体被解释为生殖结构。由于缺乏保留的字符，因此分类学上的精确度受到限制，尽管我们认为这些化石很可能是栖于池塘或湖泊中的zygnematalean或oedogonialean藻类，并附着在基质上和/或自由漂浮。