Nomenclator, geographic and stratigraphic distribution of the family Triphoridae (Mollusca: Gastropoda) Author Bakker, Piet A. J. 0000-0003-4683-2083 hannco.bakker@naturalis.nl Author Albano, Paolo G. 0000-0003-4683-2083 hannco.bakker@naturalis.nl text Zootaxa 2022 2022-01-11 5088 1 1 216 journal article 10.11646/zootaxa.5088.1.1 1175-5326 5836536 904D8C6D-A0C0-4D5A-960F-AEBACE141DF0 Triforis margaritacea Dunker [unavailable: nomen nudum ] Triforis margaritacea Dunker Schmeltz 1869: 80 . Triforis margaritaceus Dunker Paetel 1888: 349 . Remarks. This species was listed as new species in 1869 by Dunker in Schmeltz (1869) . However Bieler & Petit (2012) already noted that ‘no description of this species has been located’. Therefore this name shall be considered to be a nomen nudum .