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Tribrachidium : ウィキペディア英語版 | Tribrachidium
''Tribrachidium heraldicum'' is a tri-radially symmetrical fossil animal that lived in the late Ediacaran (Vendian) seas. In life, it was hemispherical in form. ''T. heraldicum'' is the best known member of the extinct group Trilobozoa. ==Etymology== The generic name ''Tribrachidium'' is derived from combination of the Greek ''τρία'' (tria, "three") + Latin ''brachium'' ("arm") + diminutive suffix -''idium''. The specific name ''T. heraldicum'' is referring to similarity of the pattern of this fossil with the well-known heraldic triskelion design, such as the coat of arms of the Isle of Man.〔
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「Tribrachidium」の詳細全文を読む
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