首页> 外文期刊>Journal of nannoplankton research: A publication of the International Nannoplankton Association >Observation of an exothecal coccolith associated with Syracosphaera halldalii:evidence for dithecatism?
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Observation of an exothecal coccolith associated with Syracosphaera halldalii:evidence for dithecatism?

机译:观察到与Syracosphaera halldalii相关的鞘外结石:是否有二叠系疗法的证据?

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摘要

A specimen of the coccolithophore Syracosphaera halldalii collected in Irish Shelf Waters is observed in Scanning Electron Micrographs (SEM) associated with a single exothecal coccolith. The exothecal coccolith is situated in the circum-flagellar area of a collapsed coccosphere and is a thick, elliptical, planolith,concavely bent and with an open centre. S. halldalii has been regarded as monothecate although this single observation may indicate dithecatism in the species and with further observations, could necessitate reclassification within the Syracosphaera.
机译:在与单个外鞘球石相关的扫描电子显微镜(SEM)中观察到在爱尔兰架子水域中收集到的球石藻Syracosphaera halldalii的标本。鞘外结石位于球囊塌陷的后鞭毛区,是厚的,椭圆形的,扁平的,凹形弯曲且中心开放的。尽管该单一观察结果可能表明该物种存在双恶病性,但经过进一步观察,可能需要在Syracosphaera内进行重新分类。

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