Hitchcock, E. 1865. Supplement to the Ichnology of New England, A Report to the Government of Massachusetts: 93.
Hitchcock, 1865. Ichnol. New England, Suppl.: 18.
Type species: Bisulcus undulatus Hitchcock, 1865 (monotypy)
Hitchcock, 1865. Ichnol. New England, Suppl.: 18.
Type species: Trisulcus laqueatus Hitchcock, 1865 (monotypy)
Hitchcock, 1865. Ichnol. New England, Suppl.: 18, pl. 3, fig. 4.
Hitchcock, 1865. Ichnol. New England, Suppl.: 18, pl. 3, fig. 5.