Bayer, F.M.; Grasshoff, M. (1997). Case 2999. Umbellula Cuvier, [1797] (Cnidaria, Anthozoa): proposed conservation as the correct original spelling, and corrections to the entries relating to Umbellularia Lamarck, 1801 on the Official Lists and Indexes of Names in Zoology.
Bulletin of Zoological Nomenclature. 54(1): 14-18.