Polypodiopsida - Equisetales - Equisetidae
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 abiquiense, Equisetum arcticum, Equisetum arvense, Equisetum burchardti, Equisetum canaliculatum, Equisetum cascadensis, Equisetum collieri, Equisetum columnare, Equisetum deciduum, Equisetum florissantense, Equisetum fluviatile, Equisetum globulosum, Equisetum haguei, Equisetum haydenii, Equisetum knowltoni, Equisetum laevigatum, Equisetum lesquereuxii, Equisetum lyellii, Equisetum meriani, Equisetum mokhotlongensis, Equisetum montanense, Equisetum muensteri, Equisetum newberryi, Equisetum oregonense, Equisetum parlatorii, Equisetum perlaevigatum, Equisetum phillipsii, Equisetum rajmahalense, Equisetum robustum, Equisetum rogersii, Equisetum scirpoides, Equisetum similkamense, Equisetum sylvaticum, Equisetum texense, Equisetum wyomingense
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.
Distribution:
• Eocene of United States (1: North Dakota collection)
• Clarkforkian of United States (5: North Dakota)
Total: 6 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.