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Parka (genus)
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Parka (genus) : ウィキペディア英語版
Parka (genus)

''Parka decipiens'' is a Devonian fossil believed to be an early land plant. It bears at least a passing resemblance to the alga ''Coleochaete'', but the significance of this similarity is yet to be established.
==Description==
The fossils of ''Parka decipiens'' seems small circular, elliptic or irregular patches reaching a diameter of , with a reticulate structure showing small coaly discs. These discs contain a mass of what could be spores. 〔(The enigmatic plant Parka decipiens ) 〕 Ultrastructural examination of these spores has shown that they lack the y-shaped trilete mark, a Y-like scar, that is characteristic of Silurian and Devonian pteridophytes.


抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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