椿榆属(学名:Cedrelospermum)是榆科下一灭绝植物[1]。其化石在北美发现于早始新世早渐新世地层, 在欧洲见于中始新世中中新世地层, 在亚洲见于西藏班戈中始新世、尼玛晚始新世、双湖晚渐新世和云南马关晚始新世地层[1]

椿榆属
椿榆属植物的果实化石
科学分类 编辑
界: 植物界 Plantae
演化支 维管植物 Tracheophyta
演化支 被子植物 Angiosperms
演化支 真双子叶植物 Eudicots
演化支 蔷薇类植物 Rosids
目: 蔷薇目 Rosales
科: 榆科 Ulmaceae
属: 椿榆属 Cedrelospermum
G.Saporta, 1889

椿榆属果实椭圆三角形, 一侧着生膜状翅[2][3]。一部分种类仅有一个翅;另一部分种类具有主、副两个分离的翅[3][4]

物种

编辑

椿榆属化石物种已发现的有[1]

参考文献

编辑
  1. ^ 1.0 1.1 1.2 Jia, Linbo; Su, Tao; Li, Weicheng; Li, Shufeng; Huang, Yongjiang; Zhou, Zhekun. The floristic differentiation of Southwest China: Insights from Cedrelospermum and Ailanthus fossils. Biodiversity Science. 2022-11-20, 30 (11): 22348. doi:10.17520/biods.2022348. 
  2. ^ Jia, Lin‐Bo; Su, Tao; Huang, Yong‐Jiang; Wu, Fei‐Xiang; Deng, Tao; Zhou, Zhe‐Kun. First fossil record of Cedrelospermum (Ulmaceae) from the Qinghai–Tibetan Plateau: Implications for morphological evolution and biogeography. Journal of Systematics and Evolution. 2019-03, 57 (2): 94–104. doi:10.1111/jse.12435. 
  3. ^ 3.0 3.1 Jia, Lin-Bo; Manchester, Steven R.; Su, Tao; Xing, Yao-Wu; Chen, Wen-Yun; Huang, Yong-Jiang; Zhou, Zhe-Kun. First occurrence of Cedrelospermum (Ulmaceae) in Asia and its biogeographic implications. Journal of Plant Research. 2015-09, 128 (5): 747–761. doi:10.1007/s10265-015-0739-2. 
  4. ^ Manchester, Steven R. Attached Reproductive and Vegetative Remains of the Extinct American- European Genus Cedrelospermum (Ulmaceae) from the Early Tertiary of Utah and Colorado. American Journal of Botany. 1989-02, 76 (2): 256. doi:10.2307/2444668. 
  5. ^ Jia, Lin-Bo,Su, Tao,Huang, Yong-Jiang,et al. First fossil record of Cedrelospermum (Ulmaceae) from the Qinghai-Tibetan Plateau: Implications for morphological evolution and biogeography[J]. JOURNAL OF SYSTEMATICS AND EVOLUTION,2019,57(2):94-104.