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Pallaviciniites : ウィキペディア英語版 | Pallaviciniites
The lowermost Upper Devonian fossil ''Pallaviciniites'' was for a time the oldest known liverwort until ''Metzgeriothallus'' was recovered from earlier Devonian strata. It had a central axis, and bifurcated at its tips; similar fossils have been found in younger strata through to the Pleistocene. With the exception of its elongated axial conducting (non-vascular) cells, the thallus was a single cell thick. It had a serrated margin. Prior to its discovery, the oldest known liverworts dated to the Lower Carboniferous.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Pallaviciniites」の詳細全文を読む
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