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Oikobesalon
''Oikobesalon'' is an ichnogenus of unbranched, elongate burrows (a type of trace fossil) in originally soft substrate. The burrows are unbranched and straight, single-entrance with circular to elliptical cross-section. They are covered with thin mineralized lining. The burrow lining has a transverse ornamentation in the form of fusiform annulation. The earliest ''Oikobesalon'' traces are known from the Cambrian. ==References==
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「Oikobesalon」の詳細全文を読む
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