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・ Eoacmaea chamorrorum
・ Eoacmaea conoidalis
・ Eoacmaea ivani
・ Eoacmaea javanica
・ Eoacmaea mauritiana
・ Eoacmaea omanensis
・ Eoacmaea perfestiva
・ Eoacmaea profunda
・ Eoacmaea pustulata
・ Eoacmaea semirubida
・ Eoactinistia
・ Eoagnostus
・ Eoaleurina
・ Eoalligator
・ Eoalulavis
Eoandromeda
・ Eoanguilla
・ Eoanseranas
・ Eoarchean
・ Eoarctops
・ Eoarthropleura
・ Eoasthena
・ Eoaulostomus
・ Eoazhdarcho
・ EOB
・ Eobaatar
・ Eobaataridae
・ Eobacteria
・ Eobacterium
・ Eobalaenoptera


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Eoandromeda : ウィキペディア英語版
Eoandromeda

''Eoandromeda'' is an Ediacaran organism consisting of eight radial spiral arms, and known from two taphonomic modes: the standard Ediacara type preservation in Australia, and as carbonaceous compressions from the Doushantuo formation of China,
where it is abundant.
==Morphology==

A few dozen fossil specimens are known, ranging from about 1 to 4 cm in diameter; they are circular in outline and their eight arms, with closed ends, spiral either clockwise or counterclockwise.〔
Ridges cut across both the inside and outside of the spiral arms.〔 The arms of the Australian individuals are longer and more tightly coiled than those of the Chinese, despite the Australian individuals not attaining as large a diameter; they are more often kinked.

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「Eoandromeda」の詳細全文を読む



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