Hoploscaphites constrictus (Sowerby, 1817)

Documentation :

- W. J. Kennedy, 1984.

Ammonite faunas of the Coniacian, Santonian and Campanian stages in the aquitaine basin.

- W. J. Kennedy, 1986.

The ammonite fauna of the Calcaire à Baculites (Upper Maastrichtian) of the Cotentin peninsula (Manche, France).

- W. J. Kennedy, M. Bilotte, B. Lepicard,  F. Segura, 1986.

Upper Campanian and Maastrichtian ammonites from the Petites-Pyrénées, southern France.

- M. Machalski, C. Heinberg, 2005.

Evidence for ammonite survival into the Danian (Paleogene) from the Cerithium limestone at Stevns Klint, Denmark.

- B. Niebuhr, 2003.

Late Campanian and early Maastrichtian ammonites from the white chalk of Kronsmoor (northern Germany) - taxonomy and stratigraphy.

- J. Sowerby, 1817.

The mineral conchology of Great Britain, tome 2.

- C. W. Wright, J. H. Callomon, M. K. Howarth, 1996.

Treatise on invertebrate paleontology, part L, Mollusca (revised).