A summary of reports of abyssal and hadal Monoplacophora and Polyplacophora (Mollusca) * Author Schwabe, Enrico text Zootaxa 2008 1866 205 222 journal article 10.5281/zenodo.183815 7ce45df8-da22-4d29-810c-33564fb50f16 1175­5326 183815 Leptochiton incongruus ( Dall, 1908 ) Lepidopleurus incongruus Dall 1908 : 355 . Ferreira (1979) mentioned two specimens of this species from Mexico , Gulf of Tehuantepec, off Salina Cruz ( 15°40'N , 95°20'W ), 3541–3612 m .