河北省丰宁县北部侏罗系义县组底部首次发现鸟类化石。
Bird fossils were for the first time discovered in the bottom of the Jurassic Yixian Formation in the north of Fengning county, Hebei.
中国科学家今年先后在辽西北票地区发现十枚始祖鸟类化石。
Chinese scientists have successively discovered ten archaeopteryx-type fossils in the Beipiao region of Liaoxi this year.
本文记述了山东临朐山旺组(中新世中期)出产的两件鸟类化石。
Two fossil birds collected from Shanwang Formation, Middle Miocene (about fifteen million years ago), of Linqu, Shandong are here described.
这些鸟类化石对研究遗址的生态环境、气候变化以及鸟类地理分布、迁徙和演化等都有重要意义。
These bird fossils have great significance for both the study of the climatic and eco-environmental change at the Ashan site and the avian geographic distribution, mi gra tion and evolution.
这些鸟类化石对研究遗址的生态环境、气候变化以及鸟类地理分布、迁徙和演化等都有重要意义。
These bird fossils have great significance for both the study of the climatic and eco-environmental change at the Ashan site and the avian geographic distribution, mi gra tion and evolution.
应用推荐