nominal species Unio verbeeki ‘von Martens’ of Authors

Unio verbeeki ‘von Martens’ of Authors = Lens contradens

‘von Martens’ of Authors.
‘(Boettger) v. Martens’ Haas, 1914. Conch. Cab. 9 (pt. 2, h. 49): 198.
Modell, 1942. Arch. Moll. 74(5/6): 189.
‘Martens’ Haas, 1969. Das Tierreich 88: 101.
‘Martens’ Haas, 1969. Treatise on Invert. Paleo 1: N420.
‘(Martens)’ Brandt, 1974. Arch. Moll. 105: 289.
Millard, 2001. Class. Moll. (3): 1064.
(error for Unio verbecki Martens, 1897)