Müller, P.; Hahn, G. (2017). Edrioasteroidea from the Seifen Formation of the Westerwald, Rhenish Slate Mountains (Lower Devonian, Germany), part 2: Sumrallia rseiberti gen. et sp. nov. PalZ. 91(4): 629-639.
Edrioasteroidea from the Seifen Formation of the Westerwald, Rhenish Slate Mountains (Lower Devonian, Germany), part 2: Sumrallia rseiberti gen. et sp. nov