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被子植物与人类生活关系密切。它们在白垩纪早期有少量代表,在白垩纪中期遍布于世界各地。由于缺乏公认的侏罗纪或更早的化石证据,被子植物起源问题特别是祖先类群起源的时间和地点以及早期演化问题,长期悬而未决。1971年冬笔者于燕辽地区东部(东经120°21′,北纬40°58′)中侏罗世海房沟组中,发现一批被子植物先驱化石与已知的中侏罗世植物化石群及动物化石群共存。
Angiosperms and human life are closely related. They have a small number of representatives in the early Cretaceous, in the mid-Cretaceous throughout the world. Due to the lack of proven evidence of Jurassic or earlier fossils, the origin of angiosperms, especially the timing and location of ancestral groups, as well as their early evolutionary problems, have long been unresolved. In the mid-Jurassic Haifanggou Formation in the eastern part of Yanyao-Liao area in the late 1971 (120 ° 21’E and 40 ° 58’N), a group of pioneer fossils of angiosperms and known middle-Jurassic fossils and animals Fossil co-exist.