Sphenobaiera (Spanish Wikipedia)

Analysis of information sources in references of the Wikipedia article "Sphenobaiera" in Spanish language version.

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amjbot.org

Wang, Yongdong; et al. (April 2005.). «Cuticular Anatomy of Sphenobaiera Huangii (Ginkgoales) from the Lower Jurassic of Hubei, China» (PDF embedded in HTML). American Journal of Botany 92 (4): 709-721. doi:10.3732/ajb.92.4.709. Consultado el 7 de junio de 2011.

Susannah J. Lydon, Joan Watson & Nicola A. Harrison (2003). «The lectotype of Sphenobaiera ikorfatensis (Seward) Florin, a ginkgophyte from the Lower Cretaceous of western Greenland». Palaeontology 46 (2): 413-421. doi:10.1111/1475-4983.00304.
Wang, Yongdong; et al. (April 2005.). «Cuticular Anatomy of Sphenobaiera Huangii (Ginkgoales) from the Lower Jurassic of Hubei, China» (PDF embedded in HTML). American Journal of Botany 92 (4): 709-721. doi:10.3732/ajb.92.4.709. Consultado el 7 de junio de 2011.

Elizabeth J. Cahoon (1960). «Sphenobaiera ikorfatensis f. papillata from the Lakota Formation of the Black Hills». Bulletin of the Torrey Botanical Club 87 (4): 247-257. JSTOR 2482869.