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Sequoiadendron is a genus of evergreen trees, with three species, only one of which survives to the present:cite-ref-n-1-1[1]

• Sequoiadendron giganteum, extant, commonly known as wellingtonia, giant redwood and giant sequoia,cite-ref-2[2] growing naturally in the Sierra Nevada mountains of Californiacite-ref-3[3]

• † Sequoiadendron chaneyi, the predecessor of Sequoiadendron giganteum, found mostly in the Nevada area of the Tertiary Colorado Plateau until the late Miocenecite-ref-4[4]

• †Sequoiadendron tchucoticum Late Cretaceous; Enmyvaam River Basin, Russiacite-ref-sokolova-5-0[5]

• Fossil record

• References

Sequoiadendron fossil pollen and macrofossils may have been found as early as the Late Cretaceouscite-ref-sokolova-5-1[5] and throughout the Northern Hemisphere,cite-ref-6[6] including locations in western Georgia in the Caucasus region.cite-ref-7[7]

cite-note-n-11. "Kew World Checklist of Selected Plant Families".

cite-note-22. ↑ "Wellingtonia – Sequoiadendron giganteum". NatureSpot. Retrieved 2022-01-27.

cite-note-33. ↑ "2013 county distribution map". Biota of North America.

cite-note-44. ↑ citerefaxelrod1959Axelrod, Daniel L. (1959). "Late Cenozoic evolution of the Sierran Bigtree forest". Evolution. 13 (1): 9–23. doi:10.1111/j.1558-5646.1959.tb02990.x. JSTOR 2405942.

cite-note-sokolova-55. ↑ citerefa-b-sokolovam-g-moiseeva2016A. B. Sokolova; M. G. Moiseeva (2016). "A New Species of the Genus Sequoiadendron Buchholz (Cupressaceae) from the Upper Cretaceous of the Enmyvaam River Basin, Central Chukotka". Paleontological Journal. 50 (1): 96–107. doi:10.1134/S003103011601010X. S2CID 129990538.

cite-note-66. ↑ citerefchaney1950Chaney, Ralph W (1950). "A Revision of Fossil Sequoia and Taxodium in Western North America Based on the Recent Discovery of Metasequoia". Transactions of the American Philosophical Society. 40 (3): 188. doi:10.2307/1005641. JSTOR 1005641.

cite-note-77. ↑ citerefshatilovamchedlishvilirukhadzekvavadze2011Shatilova, Irina; Mchedlishvili, Nino; Rukhadze, Luara; Kvavadze, Eliso (2011). The History of the Flora and Vegetation of Georgia. Tbilisi: Georgian National Museum Institute of Paleobiology. ISBN 978-9941-9105-3-1.