中国地质大学龚一鸣团队近日研究了阜平动物群：大奥陶世生物多样性事件初期的深水动物群。这一研究成果发表在2025年7月3日出版的《地质学》杂志上。

阜平动物群是一个深水斜坡相的Konservat-Lagerst，来自华北克拉通南部的上奥陶统（卡田）。该动物群主要有多翼动物、甲壳动物、双壳节肢动物、巨壳动物、针孔动物、腕足动物、软体动物、牙形刺和粪化石，代表了奥陶纪的第一批孔雀石发现于华北克拉通。其独特的环境（碳酸盐岩）和独特的生物特征（动物群多样，缺乏典型的奥陶纪分类群，如三叶虫和笔石）丰富了他们对奥陶纪深水生态系统生物组合和生态位的认识。阜平动物群的发现不仅扩大了奥陶系的分布范围和沉积环境。同时也表明在GOBE的鼎盛时期，深水区系具有较高的生态复杂性和生物多样性。

研究组表示，奥陶纪生物多样性大事件（GOBE）极大地丰富了海洋生物多样性，促进了生态系统的复杂化，为随后的海洋生物灭绝奠定了基础。奥陶纪的发现对于理解与GOBE相关的过程和生态系统演化至关重要。然而，最著名的奥陶纪的Konservat-Lagerst来自浅水环境；那些来自深水（斜坡-盆地）环境的非常罕见。这种保存偏差严重限制了对奥陶纪生物多样性分布和动态演化的全面认识。

附：英文原文

Title: Fuping Fauna: A deep-water fauna in the prime of the Great Ordovician Biodiversification Event

Author: Yilong Liu, Dan Tu, Ruoying Fan, Qingyang Xu, Xin Hu, Ruiwen Zong, Yiming Gong

Issue&Volume: 2025-07-03

Abstract: The Great Ordovician Biodiversification Event (GOBE) greatly enriched marine biodiversity, promoted the complexification of ecosystems, and laid the foundation for the subsequent flourishing of marine life. The discovery of Ordovician Konservat-Lagersttten is crucial for understanding the processes and ecosystem evolution associated with the GOBE. However, most known Ordovician Konservat-Lagersttten are derived from shallow-water environments; those from deep-water (slope-basin) settings are extremely rare. This preservational bias severely limits a comprehensive understanding of the distribution and dynamic evolution of biodiversity in the Ordovician. Here, we report the Fuping Fauna, a deep-water slope facies Konservat-Lagersttte from the Upper Ordovician (Katian) in the southern part of the North China craton. This fauna is composed mainly of eurypterids, cheloniellids, aglaspidids, bivalved arthropods, megacheirans, cnidarians, brachiopods, molluscs, conodonts, and coprolites, representing the first Ordovician Konservat-Lagersttte discovered in the North China craton. Its unique environment (carbonate contourites) and distinctive biological features (diverse fauna with the absence of typical Ordovician taxa, such as trilobites and graptolites) enrich our understanding of the biological assemblages and ecological niches of the Ordovician deep-water ecosystems. The discovery of the Fuping Fauna not only expands the distribution range and sedimentary environment of the Ordovician Konservat-Lagersttten but also indicates that the deep-water fauna exhibited high ecological complexity and biodiversity in the prime of the GOBE.

DOI: 10.1130/G53475.1

Source: https://pubs.geoscienceworld.org/gsa/geology/article-abstract/doi/10.1130/G53475.1/659355/Fuping-Fauna-A-deep-water-fauna-in-the-prime-ofredirectedFrom=fulltext