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fei bo ke ( zhu zuo )(verbeekina) ke de gou zao
Author(s): 
Pages: 423-426+463-464
Year: Issue:  4
Journal: Acta Micropalaeontologica Sinica

Keyword:  拟旋脊隔壁沟立体标本轴切面壳圈列孔茅口组登记号伯克原生质流动;
Abstract: 本文所研究的费伯克得(竹蜓)标本系采自广西合山下二叠统茅口组的石灰岩,我们在研究其立体标本时发现,由于(竹蜓)壳内圈和外圈的包旋轴有微小的变化,使得至少有一部分拟旋脊延伸方向与前一壳圈上的隔壁沟斜交。拟旋脊常常时隐时现呈虚线状,甚至在列孔两侧的隔壁上并无拟旋脊出现,而只具有列孔,隔壁沟也不是完全平直,壁孔的孔经大约为列孔的十分之一。本文还阐述了Verbeekina的拟旋脊细微构造。
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