王冠头虫的卷曲

ON THE CURL OF STEPHANOCARE

笔者(1987,1988)在辽东半岛南部复州湾晚寒武世崮山组中发现卷曲的王冠头虫。卷曲的王冠头虫的卷曲器官为胸节和尾节,其中最重要的是胸节和尾节中轴的半环。三叶虫的卷曲显示了生物力学的作用,卷曲是生物与环境相适应的表现,由环节动物的侧曲到节肢动物三叶虫的卷曲是生物演化的规律。

The curl of Stephanocare was discovered by the authors at Gushan Formation ofthe upper Cambrian in Fuzhouwan of southern Liaodong peninsula.The curly organsare thoracic segments and pygous segments,and their artieulating halfring is the mostimportant.The curl of Trilobite shows the effect of biomechonics,it is the expressionof adaptation to environment.The process from side-curl of Annelida to curl of Tri-lobite of Arthropods is law of evolution of living beings.