Thirteen ichnogenera and seventeen ichnospecies were recognised in carbonate rocks from the Lower Permian Taiyuan Formation in North China Basin. Based on the composition, occurrence and diversity of ichnofossils, intensity of bioturbation, lithologic characteristics, especially on the variation of individual size and the filling colour diversities of the Zoophycos burrows, four types of ichnofabrics were recognised, that is (1) epigenic tiering ichnofabric – mainly appeared on or near the bedding plane and formed in restricted bay or lagoon sedimentary environments; (2) shallow tiering ichnofabric – developed less than 15 cm under the bedding plane and occurred in the upper shallow-marine environment; (3) medium tiering ichnofabric – mainly distributed from 15 to 20 cm under the bedding plane and generated in the mid-upper shallow sea (restricted–open platform); (4) deep tiering ichnofabric – distributed from 25 to 30 cm under the bedding plane and occurred in lower shallow sea (open platform) far from shore. Based on ichnological and sedimentological analyses above four types of ichnofabrics, the sedimentary environment model of the ichnofabrics in carbonate rocks from the Taiyuan Formation in North China Basin is proposed in this paper.

中文翻译：

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华北盆地下二叠统太原组地物化石与地层织物

在华北盆地下二叠统太原组碳酸盐岩中发现了 13 种鱼属和 17 种鱼种。根据化石的组成、产状和多样性、生物扰动的强度、岩性特征，特别是个体大小的变化和Zoophycos洞穴的填充颜色多样性，识别出四种类型的地层结构，即（1）表生分层层状结构– 主要出现在层理面或附近，形成于受限海湾或泻湖沉积环境；(2)浅层层状结构——发育于层理平面以下15cm以内，发生在上层浅海环境；(3) 中层状石化织物——主要分布于层理面下15～20cm，产于中上浅海（限制-开阔地台）；(4) 深层次层状结构——分布于层理平面下25～30cm，发生在远离海岸的浅海下层（开阔平台）。本文在对上述四种类型的地层结构进行地质学和沉积学分析的基础上，提出了华北盆地太原组碳酸盐岩中地层结构的沉积环境模型。