List of the studied authors
Haeckel, 1864 (p.105, figs.F); Giesbrecht, 1892 (p.619, 644, 775, figs.F,M); A. Scott, 1909 (p.254, Rem.); Lehnhofer, 1929 (p.295, figs.F,M, Rem.); Rose, 1933 a (p.317, figs.F,M); Mori, 1937 (1964) (p.126, figs.F); Lysholm & al., 1945 (p.43); Chiba & al., 1957 (p.310); 1957 a (p.12); Crisafi & Mazza, 1966 (p.567, 569, 594, figs.F,M,
Rem.); Crisafi, 1966 (p.660, fig. Juv.); Corral Estrada, 1970 (p.231); Chen & al., 1974 (p.49, figs.F,M); Chae & Nishida, 1994 (p.205, 208, integumental structure, pattern color); Chihara & Murano, 1997 (p.989, Pl.230: F,M); Conway & al., 2003 (p.234, figs.F,M,
Rem.); Vives & Shmeleva, 2010 (p.369, figs.F,M,
Rem.)