吉林省中东部晚中生代含煤地层中的木化石

通过对吉林省晚中生代含煤地层中木化石的系统调查，共采集162块木化石，均属裸子植物，共5属8种。其中出现频率最高者为异木属，其次为落羽杉型木属等，Taxadiorylon albertense，T．pseudonlbertense两种在中国为首次发现。笔者将木化石称Xenoxylon latiporosum-Taxodioxylon pseudoalbeltense组合。研究表明，异木属主要生长在温湿的温带气候环境；据目前的资料还不能证明该属是适应能力极强的树种。本文还记述了上述木化石产出的地质概况，并探讨了其地质意义和古环境。

Fossil woods from coal-bearing strata of Upper Mesozoic in central and eastern Jilin, China

The fossil woods abundantly occurred in coal-bearing strata of Upper Mesozoic in Jilin, China. 162 pieces of the fossil woods were collected in systematic survey. All of them belong to gymnosperm, and attribute to 5 genera and 8 species. In appearing frequency, the highest is Xenoxylon, the second is Taxodioxylon. Among them the two species Taxodioxylon albertense and T. pseudoalbertense are found in China for the first time. The fossil woods above-mentioned are suggested by the authors as Xenoxylon latiporosum -Taccodl- axcylon pseudoalbertense assemblage. The study demonstrates that Xenoxylon is developed in humid environment of temperate climate, and it can not be proved the taxon with the most adaptive capacity. The authors also described the fossil woods in their general geology concerned, and discussed the significance for study of their palaeoenvironment.