pt .1851  Goniatites retrorsus var. undulatus.-Sandberger &  Sandberger (non Brown,1841), p.103,109, pl.10 fig.17-18
              (non fig.19=Neotypus Aulat. eifliense, non pl.10a fig.7=?Falcit. korni).
pt. 1851  Goniatites retrorsus var. undulatus.-Sandberger: 551, pl.10 fig.17-18.
non1859  Goniatites Sandbergeri.-Beyrich, p.140 (=Pseudoclymenia  pseudogoniatites Sandberger, 1853).
non1883a Goniatites undulatus.-v.Koenen, p.115(?=Falcit.).
non1883b Goniatites undulatus.-v.Koenen, p.171(").
non1887  Goniatites undulatus.-deRouville, p.40 (?=Falcit.).
non 1887  Goniatites undulatus.-de Sarran, p.418 (?=Falcit.).
       1887  Tornoceras undulatus.-Frech, p.127.
 pt. 1897  Tornoceras Sandbergeri Foord & Crick, p.122, textfig.49(non BMNH C1793 = Aulat. eifliense,
                non C1795m = Aulat. eifliense, Ph.keyserlingi and sp.indet, non 1961e = Aulat.sp.,Linguat.sp.).
      1897  Tornoceras Sandbergi, nom. nov..-Foord & Crick: 112, textfig.49.
non1908  Tornoceras undulatus.-Wedekind, p.580 (=Arm. planidorsatus).
pt.  1908  Goniatites retrorsus var. undulatus.-Schöndorf: 47.
      1913  Tornoceras undulatus.-Frech, p.17.
non1916  Tornoceras undulatum.-Oppenheimer, p.175, pl.1 fig.5 (=Falcitornoceras).
?non 1921  Tornoceras undulatus.-Schindewolf, p.188.
 non 1929  Tornoceras undulatus.-Lange, p.13.
 non 1951  Tornoceras undulatum.-Petter, p.359 (=Holzapfeloceras djemeli).
 non 1952  Tornoceras undulatum.-Petter, p.52, cf.p.72, pl.4 fig.5a.c(=Holzapfeloceras djemeli).
 non 1972  Tornoceras (Aulatornoceras) cf. undulatus.-Clausen (in Buggisch), pl.5 (=Ph. frechi).
 non 1987  Aulatornoceras (Truyolsoceras) cf. undulatum.- Montesinos.
        1993  Truyolsoceras sandbergeri.-Becker: 218, pl.10  fig.1-2, textfig.79f,h.
        2002  Truyolsoceras sandbergeri.-Korn & Klug: 163, Fig.149 H, M.