热河群（英语：Jehol Group），也称作热河生物群（英语：Jehol Biota）是中国东北部地层学单位，位于辽宁，河北和内蒙古省内地区，由较古老的义县组和较新的九佛堂组组成。
热河生物群的研究还具有很大的潜力，而对化石的科学发掘和保护的任务还十分艰巨。
The study of the Jehol Biota has a long way to go, while the scientific administration and protection of the fossil sites remains a pressing issue.
辽西地区早白垩世早期义县组以产出精美的热河生物群而闻名于世，热河生物群研究的每一个重要进展都引起国内外科学家的极大关注。
The Yixian Formation becomes world well-known by fancy Jehol bita fossils, each signify headway of bita research would bring both here and abroad scientists' attention.
通过辽西义县盆地上白垩统义县组湖相碳酸盐岩碳氧稳定同位素组成，分析了赋存热河生物群的义县盆地湖湘沉积环境。
The present study made a detailed carbon and oxygen stable isotope analysis on the lacustrine carbonates from the Lower Cretaceous Yixian Formation, Yixian, western Liaoning, NE China.
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