Researchers reveal first complete MDICE signal in Ordovician organic carbon isotope record
奥陶纪时期是地球地质历史上的关键章节，碳同位素记录既是地层相关性的关键工具，又是揭开古代气候和生物圈共同发展的重要档案。然而，几十年来，先前的研究主要集中在碳酸盐同位素（Δ13CCARB）数据上，从而使有机碳同位素（Δ13CORG）记录了大量研究。
Palaeocampa anthrax Meek & Worthen, 1865A large (40 mm) Palaeocampa anthrax is depicted at the edge of a shallow inland streambed, shadowed by the lush vegetation and mist of a coal forest, flanked by several euthycarcinoids, Sottyxerxes multiplex116 (max size ~35 mm), and a pair of freshwater xipho
