摘要
我们从记录从的 ichnospecies Undichna unisulca 讨论踪迹三叠纪那在这份报纸第一次被报导。这些石块也是一些迄今为止在中国发现的最旧的脊椎动物 ichnites。游泳踪迹(Undichna unisulca ) 描述了的鱼发源从更低三叠纪。这些踪迹在 Jialingjiang 形成被发现并且在峡被定位从 Emei 的 7.5 km，四川省，中国。ichnospecies Undichna unisulca 由一个常规正弦曲线波浪组成。波长和振幅在分别地在 2832 公里和 912 公里之间变化的每个标本之间是相当不变的。当 hypichnial 在下面隆起，游泳跟踪的鱼和在一样的床以内的分发被保存。
We discuss traces from the ichnospecies Undichna unisulca recorded from the Triassic that are reported for the first time in this paper. These fossils are also some of the oldest vertebrate ichnites discovered in China to date. The fish swimming traces （Un- dichna unisulca） described originate from the Lower Triassic. These traces were found in the Jialingjiang Formation and are lo- cated at a gorge -7.5 km from Emei, Sichuan Province, China. The ichnospecies Undichna unisulca consists of a regular sinusoi- dal wave. The wavelengths and amplitudes are quite constant between each specimen ranging between 28-32 mm and 9-12 ram, respectively. The fish swimming traces and distribution within the same bed are preserved as hypichnial ridges at the undersur- face.
基金
supported by the Sichuan Key Discipline Constructing Project (SZD414)
the Sichuan Education Reform Project (P09162)
关键词
峨眉山
四川省
痕迹
下三叠统
中国
游泳
鱼
脊椎动物
fish swimming trace, Undichna unisulca, Lower Triassic, Jialingjiang Formation, Emei, Sichuan Province
