Modell, H. 1931. Die najaden der oberbayerischen cyrenenschichten. Palaeontographica 75: 63-80.
Modell, 1931. Palaeontogr. 75: 71.
Modell, 1935. Arch. Moll. 67: 130.
Modell, 1943. Arch. Moll. 75: 109.
Modell, 1964. Arch. Moll. 93: 101.
Type species: Ptychorhynchoideus gümbeli Modell, 1931 (orig. desig.) = Ptychorhynchoideus guembeli
Modell, 1931. Palaeontogr. 75: 74, pl. 14, figs. 12.
Modell, 1931. Palaeontogr. 75: 70, pl. 13, figs. 5-6; pl. 14, fig. 15c.
Modell, 1931. Palaeontogr. 75: 72, pl. 13, fig. 12; pl. 14, fig. 15g.
Modell, 1931. Palaeontogr. 75: 67, pl. 13, figs. 3.
Modell, 1931. Palaeontogr. 75: 75, pl. 13, figs. 13-14; pl. 14, figs. 15o-p.
Modell, 1931. Palaeontogr. 75: 71, pl. 13, fig.s 7-9; pl . 14, figs. 15d-f.
Modell, 1943. Arch. Moll. 75: 113, pl. 1, figs. 4a-c [as ‘Vanderschaliea kolasii’].
Modell, 1931. Palaeontogr. 75: 69, pl. 13, fig. 4.
Modell, 1931. Palaeontogr. 75: 77, pl. 14, fig. 9.
Modell, 1931. Palaeontogr. 75: 75, pl. 14, fig. 8.
Modell, 1931. Palaeontogr. 75: 73, pl. 14, figs. 1-4, 15h-k.
Modell, 1943. Arch. Moll. 75: 114.
Modell, 1931. Palaeontogr. 75: 74, pl. 14, figs. 5-7, 14, 15n.
Modell, 1943. Arch. Moll. 75: 114.
+ Unio inflatus Gümbel, 1861
+ Unio lavateri Gümbel, 1879
+ Unio umbonarius Wolff, 1897