STRUCTURE, PATTERNS AND FUNCTION OF CUTICULAR TERRACES IN TRILOBITES
STRUCTURE, PATTERNS AND FUNCTION OF CUTICULAR TERRACES IN TRILOBITES
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DOI：
10.1111/j.1502-3931.1981.tb01107.x
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发表时间：
1981-01-01
期刊：
影响因子：
1.5
通讯作者：
SCHMALFUSS, H
中科院分区：
文献类型：
--
作者：
SCHMALFUSS, H
角质层梯田系统广泛存在于三叶虫中。可识别出两种不同的模式，它们相互独立地出现：横向背部阶地，陡坡向后；同心腹面梯田，双重坡面，陡坡向外。在个体遗传学上，梯田数量有二次增加，因此单个梯田之间的距离保持不变。背部梯田的作用是提供单向摩擦，促进挖掘过程。双层床上的腹面梯田被用来加固动物下面的滤室的墙壁。
Cuticular terrace systems are widespread in trilobites. Two different patterns, occurring independently of each other, are recognized: transverse dorsal terraces with the scarp facing backwards and concentric ventral terraces on the doublures with the scarp facing outwards. Ontogenetically, there is a secondary increase of terrace number, so distances between single terraces remain constant. The dorsal terraces functioned to provide unidirectional friction facilitating the burrowing process. The ventral terraces on the doublures were used to consolidate the walls of a filter chamber underneath the animal.