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首页> 外文期刊>Journal of nannoplankton research: A publication of the International Nannoplankton Association >A new perspective of the central structure and the alignment of neogene discoasters
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A new perspective of the central structure and the alignment of neogene discoasters

机译：新基因盘的中心结构和排列的新观点

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With few exceptions, Neogene star-like Discoasters exhibit diamond shaped distal depressions (concavities) on radial elements. The concavities and the sutures they form appear to be primary morphological features observed on the distal side of the Discoaster. The concavities, sutures and the inner end of rays, bend and extend outwards to form processes (distal bosses). On the proximal side, the boss (when present), results from the inward merging of proximal ridges. Bosses are an integral part of the individual ray element and thus are not often observed in isolation within the sedimentary record. Herein we discuss the relationship between proximal and distal features observed on the centre of star-like Discoasters and speculate these may have been joined on 'male/female' structures comprising two or more Discoasters; on these structures the Discoasters rays are not aligned and seem offset or rotated. This offsetting suggests a mechanism that facilitates the interlocking and possibly the movement between proximal and distal structures.
机译：除少数例外，新近星状的“星际灾难者”在放射状元素上表现出菱形的远侧凹陷（凹面）。它们形成的凹面和缝合线似乎是在Discoaster远端观察到的主要形态特征。凹面，缝线和射线的内端弯曲并向外延伸以形成突起（远端凸起）。在近端，凸台（如果存在）是近端脊向内合并的结果。凸台是单个射线元素的组成部分，因此在沉积记录中通常不会单独观察到。在这里，我们讨论在星形Discoaster中心观察到的近端和远端特征之间的关系，并推测这些特征可能已经结合在包含两个或多个Discoaster的“男性/女性”结构上;在这些结构上，Disaster射线未对准，似乎偏移或旋转。这种偏移表明一种促进互锁以及可能在近端和远端结构之间移动的机制。

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