椿榆屬（學名：Cedrelospermum）是榆科下一屬已滅絕的植物[1]。其化石在北美發現於早始新世至早漸新世地層, 在歐洲見於中始新世至中中新世地層, 在亞洲見於西藏班戈中始新世、尼瑪晚始新世、雙湖晚漸新世和雲南馬關晚始新世地層[1]。
Quick Facts 椿榆屬, 科學分類 ...
椿榆屬
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| 椿榆屬植物的果實化石
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科學分類 
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| 界：
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植物界 Plantae
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| 演化支：
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維管束植物 Tracheophyta
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| 演化支：
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被子植物 Angiosperms
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| 演化支：
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真雙子葉植物 Eudicots
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| 演化支：
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薔薇類植物 Rosids
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| 目：
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薔薇目 Rosales
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| 科：
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榆科 Ulmaceae
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| 屬：
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†椿榆屬 Cedrelospermum
G.Saporta, 1889
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椿榆屬果實呈橢圓至三角形, 一側着生膜狀翅[2][3]。一部分種類僅有一個翅；另一部分種類具有主、副兩個分離的翅[3][4]。
椿榆屬化石的物種已發現的有[1]：
- † Cedrelospermum aquense Saporta, 1889
- †亞洲椿榆 Cedrelospermum asiaticum Jia et al., 2015
- † Cedrelospermum leptospermum Manchester, 1987
- † Cedrelospermum lineatum
- † Cedrelospermum manchesteri
- † Cedrelospermum nervosum Newberry, 1883
- † Cedrelospermum stiriacum
- †西藏椿榆 Cedrelospermum tibeticum L. B. Jia, T. Su & Z.K. Zhou, 2019[5]
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. 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. 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. 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. 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.
