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描述了3种出自黑龙江省嘉荫县晚自垩世的化石木:嘉荫柏型木(Cupressinoxylon jiayinense WangR.F.,Wang Y.F.et Chen Y.Z.)、柳杉型木(Taxodioxylon cryptomeria Schonfeld)和黑龙江原始云杉型木(Protopiceoxylon amurense DU N.Z.)。它们分别与现存的柏木属(Cupressus)、柳杉属(Cryptomeria)和油杉属(Keteleeria)有较近的亲缘关系。综合化石本研究与其现存近缘3属的地理分布区的环境分析和已有的植物叶大化石及孢粉的研究成果,黑龙江嘉荫地区晚自垩世的植被类型为针阔叶混交林,植物群由松柏类和阔叶树种组成,大多数是亚热带-暖温带分子,少量是温带分子。同时,嘉荫柏型木中真菌菌丝的侵入生长指示湿热生境的存在。上述证据表明黑龙江省嘉荫县晚自垩世为温暖、湿润的亚热带-暖温带气候。
Three fossil wood species from the Late Cretaceous of Jiayin County, Heilongjiang Province were described: Cupressinoxylon jiayinense WangR.F., Wang YFet Chen YZ, Taxodioxylon cryptomeria Schonfeld and Heilongjiang primitive Spruce-type wood (Protopiceoxylon amurense DU NZ). They are closely related to the existing Cupressus, Cryptomeria and Keteleeria, respectively. Integrated fossils This study and its existing three adjacent geographical distribution of environmental analysis and the existing plant leaf large fossils and sporopollen research results, Heilongjiang Jiayin area Late Cretaceous vegetation types as coniferous and broad-leaved mixed forest, The flora consists of coniferous and broad-leaved species, most of which are subtropical to warm-temperate molecules and a few are temperate ones. In the meantime, the invaded growth of fungal hyphae in Jiamusi wood indicates the existence of hot and humid habitats. The above evidence shows that the Late Cretaceous of Jiayin County in Heilongjiang Province is a warm and humid subtropical-warm temperate climate.