Nelumbo aureavallis is an extinct species of flowering plant in the lotus family known from Ypresian age Eocene fossils found in western North Dakota, USA. The species was described from two leaf specimens with reference to four others. The leaves were found at the AMNH fossil localities 14088, 14089, 14091a, and 14099 all of which are in the Camels Butte member of the Golden Valley Formation. The Camels Butte member outcrops at a number of sites in western North Dakota, and is designated the type locality.