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简要报道辽宁北票长皋乡侏罗纪髫髻山组的一块保存有营养器官和生殖器官解剖构造的真蕨类紫萁科植物化石.标本为一块高约50cm、直径35～41cm的柱状体,其中保存了根茎、营养羽片和生殖羽片及原位孢子等器官.通过对茎的切片观察发现该化石应为紫萁科的Ashicaulis.紫萁科的根茎化石在世界各地、尤其是辽西及周边地区的中生代地层中时有产出,但同时保存了根茎、营养羽片、生殖羽片及原位孢子的紫萁科化石迄今还未见报道.这样一个保存比较完整的化石对正确恢复地史时期紫萁科植物的整体面貌,全面研究这类植物的生物学性质、形态演化以及古环境和古气候的变迁都提供了重要和可靠的化石依据.
A brief report was made on a fossilized pteridophyte of fern as vegetative organs and reproductive organs preserved in the Jurassic Chizhouji group in Changgao Township, Beipiao, Liaoning Province. The specimen was a columnar body about 50cm in diameter and 35 ~ 41cm in diameter, The rhizome, the nutrition pinnacle and the reproductive pinnacle and the in situ spore and other organs.Based on the observation of the stem section, the fossil should be Ashicaulis, the root-fossil of the genus Asteraceae.At the world, especially in western Liaoning and the surrounding areas Of the Mesozoic strata have output, but at the same time save the rhizomes, nutrition pinnacle, reproductive pinnules and in situ spores of Aster fossils have not been reported so far.This save a relatively complete fossil right recovery to the history of the period The general appearance of aster plants provides a significant and reliable fossil basis for a comprehensive study on the biological properties, morphological evolution, and paleoenvironmental changes of these plants.