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简要报道辽西地区新近发现的保存完整的大型苏铁类植物化石标本.化石采自北票地区常河营晚三叠世的羊草沟组,且完整保存在一整块砂岩上,高89cm,宽130cm,包括有长达82cm的羽状叶、茎顶及着生其上的雄性球果.通过对羽叶和小羽片的形态及其着生方式、叶脉、球果及其着生状态等与现生苏铁类植物的对比,表明当前化石材料与现存苏铁目的泽米科有着密切的系统学关系.这是目前化石记录中保存最完整且同时具有营养和生殖器官的大型苏铁类化石,对于研究化石苏铁类的总体形貌、形态演化以及古气候环境变迁等具有重要的科学意义.
The recently reported preserved large-scale large-sized genus cycads from western Liaoning were briefly reported.The fossils were collected from the Late Triassic Leymusigou Formation in Changhe Camp, Beipiao area and were completely preserved on a single sandstone block with a height of 89 cm and a width of 130cm, including up to 82cm of pinnate leaves, stems and the male cones on their birth.By the shape of the plume and pinnules and their way of life, veins, cones and their living conditions and so on The comparison of the existing cycads shows that there is a close systematic relationship between the current fossil materials and the existing Zeomic, which is the most complete preserved cycad fossil with both vegetative and reproductive organs in the fossil record. The overall morphology, morphological evolution of fossil cycads and paleoclimatic changes in the environment have important scientific significance.