PaleoDB taxon number: 55299
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
Sister taxon: Nelumbo puertae
Type specimen: USNM 43231. Its type locality is South Central Fairy Dells (USNM 14089), which is in a Wasatchian/Tertiary channel siltstone/shale in the Golden Valley Formation of North Dakota.