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・ Orestias
・ Orestias (disambiguation)
・ Orestias (fish)
・ Orestias (orchid)
・ Orestias chungarensis
・ Orestias laucaensis
・ Orestias parinacotensis
・ Orestida
・ Orestimba Creek
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・ Orestis Karnezis
・ Orestis Laskos
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・ Orestis Menka
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Orestovia
・ Oresund Cup
・ Oresund Line
・ Oreta
・ Oreta ancora
・ Oreta andrema
・ Oreta angularis
・ Oreta ashleyi
・ Oreta bicolor
・ Oreta bilineata
・ Oreta brunnea
・ Oreta carnea
・ Oreta eminens
・ Oreta extensa
・ Oreta flavobrunnea


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Orestovia : ウィキペディア英語版
Orestovia

''Orestovia'' is a lower-middle Devonian thallophyte known from fossilised cuticle, cutinite. Described as an enigmatic taxa, ''Orestovia'' has variously been categorised as a brown algae, an algae of unknown affinities, a thalloid non-vascular plant, and an early vascular plant, or even the result of the alteration of generations of some other group.〔
''Orestovia'' are typically found as paper coals. Individual remains are naked, unbranched, cutinised axes up to 20 cm in length and 2 cm wide, tapering distally. Most specimens are preserved as hollow, cuticular sheaths that often exhibit an epidermis-like cellular pattern.〔 The cuticles bear structures which have been described as representing stomata.
Spores are sometimes preserved between its layers of cuticle.〔 A reconstruction looks similar to the extant fern ''Pilularia globulifera'' (Marsileaceae) in the water with a creeping rhizome and naked, upright axes.〔
''Orestovia'' remains have been documented from the following locations, In Russia: Pavlovsk, Voronezh Oblast,〔 Graham Bell Island, Arctic Ocean and the Kuznetsk Basin, Siberia.〔 In China: Luquan, Yunnan.
==References==


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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