anomalum, Petromyzon De la Pylaie [A. J. M.] 1835:526 [Congrès Scientifique de France v. 2 (Sept. 1834) (art. 5); ref. 1086] Not available, no distinguishing features; from Nanson stream at Fougères, Ille-et-Vilaine, Bretagne, France. Not treated by Renaud 2011:63 [ref. 31770]. •Questionably in the synonymy of Lampetra planeri (Bloch 1784) -- (Kottelat 1997:28 [ref. 22952]). Nomen Nudum. Current status: Synonym of Lampetra planeri (Bloch 1784). Petromyzontidae.