First report of oribatid mite (arthropod) borings and coprolites in Permian woods from the Helan Mountains of northern China
First report of oribatid mite (arthropod) borings and coprolites in Permian woods from the Helan Mountains of northern China
复制标题
中国北方贺兰山二叠纪森林中首次报道甲螨（节肢动物）钻洞和粪化石
DOI：
10.1016/j.palaeo.2010.01.035
复制
发表时间：
2010-03-15
影响因子：
3
通讯作者：
Liu, Lu-Jun
中科院分区：
文献类型：
--
作者：
Feng, Zhuo;Wang, Jun;Liu, Lu-Jun
本文首次描述了内蒙古和宁夏回族自治区贺兰山北部二叠系中的甲壳类蠕形螨类化石和粪便化石。据我们所知，它们是华夏古生代首次报道的螨类钻探和粪屑。它们产于化石化裸子植物树林中，分布于三个组内的五个地层层位：山西顺式组、瓜达鲁片下什霍次组和洛平组孙家沟组。钻孔和廊道被解释为主干隧道和它们的二次分支，它们相互连接，形成一个复杂的迷宫状网络。根据成分的大小、形状和密度可识别出两种类型的榴辉岩。另一种约为37.5-70微米×55-145微米，椭圆形。较小形式的硅质岩致密，分布于所有五个层位。较大的形状显示出相当松散的组织结构，只出现在西苏拉时代的木材中。华夏植物群中古生代钻木虫及其伴生化石的报道与前人关于植物-节肢动物相互作用的古地理分布和地层产状的资料是一致的。(C)2010爱思唯尔B.V.保留所有权利。
Oribatid mite borings and coprolites are described for the first time from the Permian of the northern Helan Mountains, in the Inner Mongolia (Nei Mongol) and Ningxia Huizu Autonomous Regions, northern China. To our knowledge, they are the first reported mite borings and coprolites from the Cathaysian Palaeozoic. They occur in petrified gymnospermous woods from five stratigraphic horizons within three formations: the Cisuralian Shanxi, Guadalupian Lower Shihhotse and the Lopingian Sunjiagou Formations. The borings and galleries are interpreted as trunk tunnels and their secondary branches, which are interconnected to form a complicated maze-like network. Two kinds of coprolite can be recognized based on their dimensions, shape and density of composition. One form is about 20-65 pm in diameter and of spheroidal shape, whereas the other is about 37.5-70 mu m x 55-145 mu m and ovoid in shape. The smaller form of coprolite is densely compacted and occurs in all five horizons. The larger form shows a fairly loosely organized texture and occurs only in the Cisuralian age wood. This report of Palaeozoic wood-borers and their coprolites from the Cathaysian flora is consistent with previous data on the palaeogeographical distribution and stratigraphic occurrences of plant-arthropod interactions. (C) 2010 Elsevier B.V. All rights reserved.