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Equisetum magnum Hickey 1977

Equisetopsida - Equisetales - Equisetaceae

PaleoDB taxon number: 55230

Full reference: L. J. Hickey. 1977. Stratigraphy and paleobotany of the Golden Valley Formation (Early Tertiary) of western North Dakota. The Geological Society of America Memoir 150:1-183

Belongs to Equisetum according to L. J. Hickey 1977

Sister taxa: Equisetum cascadensis, Equisetum columnare, Equisetum columnaroides, Equisetum lyellii, Equisetum mokhotlongensis, Equisetum montanensis

Type specimen: USNM 43744. Its type locality is Otter Creek (USNM 14066a), which is in a Clarkforkian channel shale in the Golden Valley Formation of North Dakota.