1. Sur les Zones d'Ammonites dans l'Albien de France et d'Angleterre;Breistroffer;Trav. Lab. géol. Grenoble,1947
2. Topley;Bristow,1875
3. Recent Additions to the Albian Ammonoid Faunas of Folkestone;Casey;Geol. Mag.,1936
4. Upper Part of the Lower Greensand around Folkestone;Casey,1939
5. The Probable Depths of the Gault Sea as indicated by its Rhizopodal Fauna;Chapman;Natural Science,1898