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利用光学显微镜和扫描电镜首次对云南省楚雄州晚中新世石灰坝组石鼓村层的钙化木材进行了解剖学研究。鉴定出两种类型的木材 :柳杉型落羽杉型木 (TaxodioxyloncryptomeripsoidesSchonfeld)和杉木型落羽杉型木 (Taxo dioxyloncunninghamioidesWatari)。二者分别与现代柳杉属和杉木属具有最接近的亲缘关系。根据这两种杉科化石木现存最近亲缘种的生态环境 ,并综合其他资料 ,推测该地区在晚中新世为温暖湿润的亚热带气候环境。
For the first time, the calcification of calcified timber in Shigu village of Lizhonghe limestone dam in Chuxiong, Yunnan Province was studied by optical microscopy and scanning electron microscopy. Two types of wood were identified: Taxodioxyloncryptomeripsoides Schoenfeldt and Taxo dioxyloncunninghamioidesWatari. The two have the closest genetic relationship with modern Cryptomeria and Cunninghamia. According to the ecological environment of the two species of Fagaceous fossil Wood, which are the most recent kinship, and based on other data, it is speculated that the area was warm and humid subtropical climate in the late Miocene.