机构地区: 沈阳地质矿产研究所
出 处: 《世界地质》 2005年第3期209-218,共10页
摘 要: Sahnioxylonrajmahalen(se拉杰马哈尔萨尼木)在中国是首次报道。标本产于辽宁北票长皋乡喇嘛营和巴图营乡油房附近中侏罗统髫髻山组。文中对Sahnioxylon与Phoroxylon(贼木)和Paradoxoxylo(n奇木)的关系做了讨论,将Sahnioxylonandrews(ii安德鲁斯萨尼木)从Sahnioxylon中分出,另立一个新属Boseoxylo(n鲍斯木属);并认为Sahnioxylon,既不是本内苏铁类也不是真正被子植物的木材,它最有可能是晚古生代一种特殊的木材Guizhouoxylo(n贵州木)经过晚三叠世的Paradoxoxylon向现存无导管的被子植物演化的一个中间环节,为一种无导管的被子植物的先驱类型。 Sahnioxylon rajmahalense collected from Middle Jurassic Tiaojishan Formation of Changao and Batuying of Beipiao, western Liaoning, is reported in China for the first time. The relations among Sahnioxylon, Phoroxylon and Paradoxoxylon were discussed. Separating Sahnioxylon andrewsii from genus Sahnioxylon, the authors established a new genus Boseoxylon gen. nov. With a new conbination to Sahnioxylon ondrewsii Bose et Sah. The systematic affinity of Sahnioxylon is considered that the genus could be an ancestral type of angiospermous wood devoid of vessels.