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・ Caimito, San Juan, Puerto Rico
・ Caimito, Sucre
・ Cai Xuetong
・ Cai Yalin
・ Cai Yaohui
・ Cai Yingting
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・ Cai Yuanpei
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Caia (plant)
・ Caia (river)
・ Caia District
・ Caia Park
・ Caia van Maasakker
・ Caia, Mozambique
・ Caiabu
・ Caiana
・ Caianda
・ Caianello
・ Caianiello
・ Caiaphas
・ Caiaphas ossuary
・ Caiapobrycon tucurui
・ Caiapozinho River


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Caia (plant) : ウィキペディア英語版
Caia (plant)

''Caia'' is a genus of small fossil plants of Late Silurian age (around ). The diagnostic characters are naked parallel-sided axes branching isotomously, terminating in vertically elongate sporangia (spore-forming organs) which bear spinous emergences particularly at the distal ends. Spores are trilete and retusoid.〔 The only known species is from Hereford, England.
Cladistic analysis suggests that the genus may belong to the Horneophytopsida, a class of the polysporangiophytes, as it lacks vascular tissue and has branched stems bearing sporangia.〔 For the cladogram, see the Horneophytopsida article.
==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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